What it means for triangles to be congruent
Watch the next lesson: https://www.khanacademy.org/math/geometry/congruent-triangles/cong_triangle/v/sss-to-show-a-radius-is-perpendicular-to-a-chord-that-it-bisects?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Missed the previous lesson?
https://www.khanacademy.org/math/geometry/congruent-triangles/transformations-congruence/v/another-example-of-rigid-transformations-for-congruence?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Geometry channel:
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Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy

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Khan Academy

Criteria for congruent triangles, SAS, ASA, SSS, RHS, AAS, ll cbse class 9 triangles
Triangle Congruence - SSS, SAS, ASA and AAS
https://www.youtube.com/watch?v=hWEVLx05D60&t=4s
Maths Congruence of Triangles part 1 (Introduction) CBSE Class 7 Mathematics VII
Finding congruent triangles | Congruence | Geometry
Oswaal CBSE Sample Question Papers Class 10 Mathematics
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galaxy coaching classes

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
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http://www.moomoomath.com/Proving-triangles-congruent.html
Introduction to congruent triangles. This video explains five methods for proving that triangles are congruent. The five methods for triangle congruence are
SSS Side Side Side
SAS Side Angle Side
ASA Angle Side Angle
AAS Angle Angle Side
HL Hypotenuse Leg
In addition each method has several examples and explains why the triangles are congruent along with tips and guidance from a veteran Geometry teacher.
You may also enjoy….
ASA Proof
https://www.youtube.com/watch?v=sxQqCFKNy5U
Angle side Angle with congruent triangles
https://www.youtube.com/watch?v=rlbwHBqu3tg
Congruent Triangles
https://www.youtube.com/watch?v=eWfEXKmNCkY
Hypotenuse/Angle Side Angle
https://www.youtube.com/watch?v=5ZNAQ5Enx8I
Khan Academy Congruent Triangles
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
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MooMoo Math and Science

Triangle Congruency and Constructions: SAS, SSS, ASA.
Write, share, and store your lesson plans at http://lesson-connect.com .

Просмотров: 123
Aaron Kennedy

Maths Congruence of Triangles part 1 (Introduction) CBSE Class 7 Mathematics VII

Просмотров: 44674
ExamFear Education

Proofs give students much trouble, so let's give them some trouble back! In this lesson we cover the four main methods of proving triangles congruent, including SSS, SAS, ASA, and AAS. We cover CPCTC as well. In the two proofs covered, one involves parallel lines and the other triangles back to back, using the reflexive property. YAY MATH!
Please visit yaymath.org
Videos copyright (c) Yay Math

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yaymath

Let's explore the difference between similar and congruent figures (similarity vs. congruence) in this conceptual mini-lesson.
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Learning Standards (8th Grade Geometry):
Understand congruence and similarity using physical models, transparencies, or geometry software.
8.G.A.4
Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.
What does it mean when two figures are similar?
What does it mean when two figures are congruent?
What is the difference between similarity and conrguence?
Image Credit: Emojis provided free by http://emojione.com
Our lessons are perfect for flipped classroom math teachers and students. This lesson is aligned with the common core learning standards for math and the SAT math curriculum as well.
MashUp Math is a great free resource for math students, parents, and teachers. Our lessons are a great resource for struggling students, flipped classroom educators, and homeschool math students.
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Our Mission: MashUp Math is our creative solution to reviving students' passion and interest for learning mathematics. As young educators, we know that all students learn math differently and that a one-size-fits-all approach is simply ineffective. The idea that the ability to understand mathematics is reserved for a select few did not sit well with us.
In addition to sharing free teacher resources (which are teacher created resources) in the form of teacher worksheets, we share new YouTube math videos every week that help math teachers and students to better understand mathematics and the common core. Our lessons can be aligned with the common core standards for common core math and are immensely popular with flipped learning educators and anyone experimenting with flipped classroom learning.
As educators, we know what it takes to be a super math teacher and that we can’t always do it alone. In addition to our cool math videos, we share articles, blogs, inspirational quotes, teacher math worksheets, and math worksheets. Whether you teach in the flipped classroom, operate in blended education or online blended learning, or are interested in finding cool math online, MashUp Math will have something for you!
Many students think of us as a math tutor online or as their on-demand online tutor. Others trust us for all things related to online math education—coming to use when they find themselves thinking “I don’t understand my homework assignment! and need some homework help!
It is also a part of our mission to make progressive steps in mathematics education. For one, our content is created with the goal of moving students from a fixed mindset to a growth mindset. We also aim to meet the unique needs of ESL math students and support math for girls as well.
Many of our users serve as a special education teacher and use our cool videos to support their special education students with special needs. Our free online math lessons are also high adaptable to your homeschool curriculum and should be added to your list of free homeschool resources.
We are also very involved in the edtech world and are very popular with Google Classroom educators, Math Games Classroom Educators, and teachers who support the use of iPad for education!
So if you could use some help with everyday math and are a student with a unique learning style or learning styles—like Visual Auditory Learning! Or if you’re tired of math games and are more interested in an easy-to-follow tutorial, check us out and learn math with us. No matter your school’s standards of learning, our YouTube Math Videos Lessons will work for you!

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MashUp Math

Transformation means movement of objects in the coordinate plane.
Transformation can be done in a number of ways, including reflection, rotation, and translation.
Reflection is flipping an object across a line without changing its size or shape.
Rotation is rotating an object about a fixed point without changing its size or shape.
Translation is sliding a figure in any direction without changing its size, shape or orientation.

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Turtlediary

Interactive Notetaking

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Melissa Bennett

Learn about congruent sides and angles of triangles, their differences and likenesses. Learn how to identify them, what the little marks and arcs on them stand for, even what the word triangle actually means. #11.2

Просмотров: 7643
JoAnn's School

http://www.kidsmathtv.com. What are congruent and non congruent figures ? Teach kids about congruency and geometry in this math video. Suitable 2nd, 3rd and 4th grade math lesson.

Просмотров: 16323
Kisi KidsMathTV

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
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Triangle vocabulary
In this video, I review the following triangle vocabulary that is used in Geometry
Triangle inequality theorem
Median of a triangle
orthocenter
Exterior angle theorem
Angle side relationship
Geometric mean
Scalene, Isosceles, Equilateral
Acute, Right, Obtuse, Equiangular
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
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MooMoo Math and Science

For a complete lesson on proving triangles are congruent, go to http://www.MathHelp.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn the following postulates related to congruent triangles and triangle proofs. If the three sides of one triangle are congruent to the three sides of another triangle, then the triangles are congruent (Side-Side-Side or SSS). If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent (Side-Angle-Side or SAS). If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent (Angle-Side-Angle or ASA). Students are then asked to determine whether given triangles are congruent, and name the postulate that is used.

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MathHelp.com

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
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The video looks at three pairs of triangles and demonstrates how the triangles are congruent using Side Side Side postulate.
Common Core Standard G.CO.8
00:12 Explains and demonstrates what a SSS triangle looks like
00:25 Compares two congruent triangles by looking at the triangle markings and list the congruent sides
01:16 Looks at another pair of congruent triangles and shows how the triangles are congruent by listing which three sides are congruent.
02:47 Proves two triangles are congruent using SSS
You may also enjoy….
ASA Proof
https://www.youtube.com/watch?v=sxQqCFKNy5U
Angle side Angle with congruent triangles
https://www.youtube.com/watch?v=rlbwHBqu3tg
Congruent Triangles
https://www.youtube.com/watch?v=eWfEXKmNCkY
Hypotenuse/Angle Side Angle
https://www.youtube.com/watch?v=5ZNAQ5Enx8I
Khan Academy Congruent Triangles
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

Просмотров: 7163
MooMoo Math and Science

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
http://www.moomoomath.com/angle-side-angle.html
Video outlines when to use angle side angle when proving that triangles are congruent. Several examples problems are worked out.
You may also enjoy….
ASA Proof
https://www.youtube.com/watch?v=sxQqCFKNy5U
Angle side Angle with congruent triangles
https://www.youtube.com/watch?v=rlbwHBqu3tg
Congruent Triangles
https://www.youtube.com/watch?v=eWfEXKmNCkY
Hypotenuse/Angle Side Angle
https://www.youtube.com/watch?v=5ZNAQ5Enx8I
Khan Academy Congruent Triangles
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

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MooMoo Math and Science

Discover more at www.ck12.org: http://www.ck12.org/geometry/Congruent-Triangles/.
Here you'll learn what it means for two triangles to be congruent, and how to find the corresponding parts of congruent triangles.
This video gives more detail about the mathematical principles presented in Congruent Triangles.
This is part of CK-12’s Geometry: Triangles and Congruence. See more at:
1. Triangle Sum Theorem:
http://www.ck12.org/geometry/Triangle-Sum-Theorem/
2. Exterior Angles Theorems:
http://www.ck12.org/geometry/Exterior-Angles-Theorems/
3. Congruent Triangles:
http://www.ck12.org/geometry/Congruent-Triangles/
4. Congruence Statements:
http://www.ck12.org/geometry/Congruence-Statements/
5. Third Angle Theorem:
http://www.ck12.org/geometry/Third-Angle-Theorem/
6. SSS Triangle Congruence:
http://www.ck12.org/geometry/SSS-Triangle-Congruence/
7. SAS Triangle Congruence:
http://www.ck12.org/geometry/SAS-Triangle-Congruence/
8. ASA and AAS Triangle Congruence:
http://www.ck12.org/geometry/ASA-and-AAS-Triangle-Congruence/
9. HL Triangle Congruence:
http://www.ck12.org/geometry/HL-Triangle-Congruence/
10. Isosceles Triangles:
http://www.ck12.org/geometry/Isosceles-Triangles/
11. Equilateral Triangles:
http://www.ck12.org/geometry/Equilateral-Triangles/
Watch the whole series of CK-12's Geometry videos: https://www.youtube.com/playlist?list=PLhWx3LZhlpsfZglz0JcMu7AMqcROsISuG

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CK-12 Foundation

Introduction to similar triangles
Watch the next lesson: https://www.khanacademy.org/math/geometry/similarity/old_school_similarity/v/similar-triangles-part-2?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Missed the previous lesson?
https://www.khanacademy.org/math/geometry/similarity/cc-solving-prob-similar-tri/v/challenging-similarity-problem?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Geometry channel:
https://www.youtube.com/channel/UCD3OtKxPRUFw8kzYlhJXa1Q?sub_confirmation=1
Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy

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Khan Academy

Click this link for eduzon Mobile App from Google Play Store: https://play.google.com/store/apps/details?id=com.app.eduzonin
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eduzon.in

Congruence of triangles Class 9 class 7 in simple way and rules to keep in mind, congruent triangle, congruent triangles, SAS,SSS,AAS, RHS,ASA,
Introduction to Congruence of Triangles - CBSE NCERT Class 9, Triangles Maths CBSE class 9,Triangles - CBSE NCERT Class 9,Finding congruent triangles | Congruence | Geometry,

Просмотров: 21370
galaxy coaching classes

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
Prove △ABD≌ △CBD
Video explains how to prove that these two triangle are congruent by using Side Side Side ( SSS)
Each statement of the theorem is explained.
Common Core Standard G.CO.8
You may also enjoy….
ASA Proof
https://www.youtube.com/watch?v=sxQqCFKNy5U
Angle side Angle with congruent triangles
https://www.youtube.com/watch?v=rlbwHBqu3tg
Congruent Triangles
https://www.youtube.com/watch?v=eWfEXKmNCkY
Hypotenuse/Angle Side Angle
https://www.youtube.com/watch?v=5ZNAQ5Enx8I
Khan Academy Congruent Triangles
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

Просмотров: 2970
MooMoo Math and Science

Definition of Congruent Figures, Applying algebra to Congruent Figures

Просмотров: 265
CoachOats

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
Properties of similar triangles
Triangles are similar if they have the same shape,but not necessarily the same size.
Properties of similar triangles
The corresponding angles are the same
The corresponding sides are in proportion
We can prove triangles are similar by:
Angle Angle ( two angles congruent to two angles of another triangle)
Side Side Side ( ll three sides in proportion to all three sides of another vtriangle)
Side Angle Side ( two proportional sides with congruent angle in between)
The video "Similar Properties" reviews these properties and provides examles.
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

Просмотров: 43
MooMoo Math and Science

Discover more at www.ck12.org: http://www.ck12.org/geometry/SAS-Triangle-Congruence/
Here you'll learn how to prove that triangles are congruent given information only about two of their sides and the angle between those two sides.
This video provides the student with a walkthrough on SAS triangle congruence.
This is part of CK-12’s Basic Geometry: Triangles and Congruence. See more at:
1. Triangle Sum Theorem:
http://www.ck12.org/geometry/Triangle-Sum-Theorem/
2. Exterior Angles Theorems:
http://www.ck12.org/geometry/Exterior-Angles-Theorems/
3. Congruent Triangles:
http://www.ck12.org/geometry/Congruent-Triangles/
4. Congruence Statements:
http://www.ck12.org/geometry/Congruence-Statements/
5. Third Angle Theorem:
http://www.ck12.org/geometry/Third-Angle-Theorem/
6. SSS Triangle Congruence:
http://www.ck12.org/geometry/SSS-Triangle-Congruence/
7. SAS Triangle Congruence:
http://www.ck12.org/geometry/SAS-Triangle-Congruence/
8. ASA and AAS Triangle Congruence:
http://www.ck12.org/geometry/ASA-and-AAS-Triangle-Congruence/
9. HL Triangle Congruence:
http://www.ck12.org/geometry/HL-Triangle-Congruence/
10. Isosceles Triangles:
http://www.ck12.org/geometry/Isosceles-Triangles/
11. Equilateral Triangles:
http://www.ck12.org/geometry/Equilateral-Triangles/
Watch the whole series of CK-12's Basic Geometry videos: https://www.youtube.com/playlist?list=PLhWx3LZhlpseSm7selpF8lEq_jtiOqpDX

Просмотров: 1134
CK-12 Foundation

College Prep Geometry.
Lesson on congruent triangles.

Просмотров: 13
Corey Bell

Watch Sal work through a basic Congruence and similarity problem.
Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s6-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT
Missed the previous lesson?
https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s2-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT
New SAT (starting March 2016) on Khan Academy: Practice all of the skills you’ll need for the new SAT. We also have four official practice exams from College Board. The October 2015 PSAT is in the style of the new SAT.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s New SAT channel:
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Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy

Просмотров: 135092
Khan Academy

Play this video lesson to teach Grade 2 kids - "Congruent Shapes", figures that have the same size and shape.

Просмотров: 23215
Turtlediary

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
http://moomoomath.com
http://www.moomoomath.com/Isosceles.html
In this video you will learn..
Isosceles triangle definition
that two sides are congruent
that two angles of an isosceles triangle are congruent
You may also enjoy…
Isosceles Triangle Theorem
https://www.youtube.com/watch?v=Tqh7RGWd480
What is an Isosceles Triangle
https://www.youtube.com/watch?v=PZR8Xv6OJR0
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

Просмотров: 19062
MooMoo Math and Science

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
The vertex angle of an isosceles triangle is the non congruent angle and is opposite the base
The video describes the vertex angle and works two sample problems
What are the measure of the base angles given a vertex angle of 110 degrees?
What is the measure of the vertex angle given a base angle of 70 degrees?
You may also enjoy…
Isosceles Triangle Theorem/Your Teacher-Math Help
https://www.youtube.com/watch?v=Tqh7RGWd480
What is an Isosceles Triangle
https://www.youtube.com/watch?v=PZR8Xv6OJR0
Constructing an Isosceles Triangle, Given a Vertex and Midsegment
https://www.youtube.com/watch?v=OH7ljH9BUJ4
Isosceles Triangle-6th Grade Math
http://www.moomoomath.com/Isosceles.html
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

Просмотров: 13595
MooMoo Math and Science

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
SAS Method for area of triangle
Video explains how to calculate the area of a triangle using the side angle side method
Use the side angle side method when you know two sides and the included angle
You may also enjoy…..
5 ways to find the area of a triangle
http://www.moomoomath.com/Finding-the-area-of-a-triangle.html
Area Triangle Coordinate Plane
https://www.youtube.com/watch?v=JY_kxkXWc48
Area of an Equilateral Triangle
https://www.youtube.com/watch?v=SYSIaLXKzKk
Area using SAS method
https://www.youtube.com/watch?v=usCptozPkWU
Finding altitude of a triangle
https://www.youtube.com/watch?v=d4YILnTV07E
Area of Triangle
https://www.youtube.com/watch?v=Dt5fi89gA-0
Triangle Area
https://www.youtube.com/watch?v=xz6gBA0M9FY
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

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MooMoo Math and Science

In this video, you will learn how to solve the most common SAT congruent triangle problems. The video also includes practice problems for you to solve along with complete solutions.

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Jessica Ramer

Triangles - Solution for Class 9th mathematics, NCERT & R.D Sharma solutions for Class 9th Maths. Get Textbook solutions for maths from evidyarthi.in

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Mathematics Class IX

Mr Rakesh Thakur has 22 years experience in teaching.At present Mr Rakesh Thakur is Adhyapak (Mathematics) in Govt Girl's Higher Secondary School Nainpur District Mandla Madhya-Pradesh. He is Samvida Grade-1 & Samvida Grade-3 Examination qualified. He has MSc(Maths), MA(Economics), BEd,
& PGDCA.

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GA study

Here we begin "Proofs." You will love this. We use "CPCFC," which means, Corresponding Parts of Congruent Figures are Congruent.
You Can Do This! :)

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Mrmathblog

🍎 Enjoy our growing library of math videos at https://www.numberock.com 🍎
Lesson Plan and Materials Below:
🍎 Check our our Geometry Unit Lesson Plans ▶ https://www.teacherspayteachers.com/Product/Geometry-Unit-2459996 🍎
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Numberock Songs for:
3rd Grade - 5th Grade Elementary School Math
UK Equivalent
Year 4 - Year 6 KS2 Maths
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What/Who is NUMBEROCK?
We make animated math videos and educational songs for kids that bring joy back into math class and make it cool again! Up until today, we have created nearly 30 animated music videos that cover mathematical concepts for 3rd Grade, 4th Grade, and 5th Grade; concepts like, Rounding Numbers, Ordering Decimals, Subtraction, 3D Shapes, Types of Angles and much more!
We're curious to see how our teaching resource will be used now that we have shared them with a broader audience. Thanks for your interest.
How did NUMBEROCK begin?
When you look at the entertainment that’s being
produced for kids in games and movies, it’s no wonder
that kids are starting to zone out in school.
During the last 7 years as an elementary public school teacher, I’ve
always tried to find new ways to capture my students’
full attention, especially for that one subject that gets
such a notoriously bad rap in elementary school – math.
One day I brought my guitar in to school to play a song
I’d written about Long Division that was accompanied
by some simple animations I’d made. While not all my
students liked the folk rock genre, I could tell I had everyone’s attention.
Soon I began writing songs in genres that my students
actually listened to: rap, rock, pop, country, you name
it. Parents would tell me that their kids were singing the
songs in the car, at dinner, even teaching them to their
siblings. Almost in disbelief that kids were singing my
math songs for fun outside of school, I felt encouraged
and inspired to keep writing. Then, three years ago, I
had one of those ‘AHA!’ moments: to write a song with a
simple animation for every math concept I had to teach.
Altogether, from 2008 to now, I’ve written songs for
nearly 50 concepts, 30 of which are now professionally
animated. Lesson materials to help maximize learning
for those 30 songs are available at "Teachers Pay Teachers",
a website where teachers, homeschoolers, and parents can buy high quality learning materials.
I hope your student(s) will find a renewed passion for math as
they access the NUMBEROCK method.

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NUMBEROCK Math Songs

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
http://www.moomoomath.com/Special-Right-triangles.html
Special right triangles are triangles that have regular patterns that makes calculations of the triangle easier. Two common special right triangles, are the 30-60-90 triangle and the 45-45-90 triangle
Transcript
Special Right Triangles
Hi welcome to MooMooMath. Today we are going to look at two type's special right triangles. The first type is 30-60=90 triangles and the second type is the 45-45-90 type triangle. Something special about the 30-60-90 triangle is that all three angles are different therefore all three sides are different, so this triangle is scalene because all three sides are different. So let's draw a 30-60=90 triangle. So if this is my triangle the smallest is this 30 degree angle and this other acute angle would be my 60 degree angle and of course my right angle would be my 90 degree angle. Now opposite my smallest angle is the shortest leg, the longer leg is opposite 60 degree angle and the right angle is always opposite the hypotenuse. So that's how you would label it. So go ahead and label the short, long leg, and the hypotenuse. Now on a 45-45-90 notice you have two angles that are congruent, therefore we have an isosceles triangle which is a triangle with two sides that are the same length and these two angles are my 45 degree angles. So this angle is 45 and this angle is 45. Since these two angles are congruent the legs will be congruent. So these are my two legs. Leg 1 and leg 2 and this is my hypotenuse because it is opposite the 90 degree angle and it is the longest side in a right triangle. So I hope this video of right triangle was helpful, we have two other videos, one which focuses on solving for 30-60-90 triangle and another that solves for 45-45-90 degree triangles.
.For a summary of the video and a practice link go to http://moomoomath.com
You may also enjoy…
Special right triangles in Geometry 30-60-90 45-45-90
https://www.youtube.com/watch?v=nVTtSE5nv7c
Special Right Triangle Explanation
https://www.youtube.com/watch?v=nVTtSE5nv7c
Special right triangles
https://www.youtube.com/watch?v=nVTtSE5nv7c
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

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MooMoo Math and Science

MathHelp.com - http://www.MathHelp.com - offers a comprehensive library of geometry lesson plans featuring a personal geometry teacher inside every lesson!

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MathHelp.com

Great geometry primer on perimeter and area. Listen carefully. Sal explains the concepts so you'll understand them.
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/geometry/basic-geometry/perimeter_area_tutorial/e/area_of_triangles_1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Watch the next lesson: https://www.khanacademy.org/math/geometry/basic-geometry/perimeter_area_tutorial/v/triangle-area-proofs?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Missed the previous lesson?
https://www.khanacademy.org/math/geometry/right_triangles_topic/cc-geometry-trig-similarity/v/example-relating-trig-function-to-side-ratios?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Geometry channel:
https://www.youtube.com/channel/UCD3OtKxPRUFw8kzYlhJXa1Q?sub_confirmation=1
Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy

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Khan Academy

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
http://moomoomath.com
http://www.moomoomath.com/Equilateral-Triangle.html
Hi Welcome to MooMooMath. Today we are going to look at Equilateral Triangles. Up here I have two different triangles. The first one we know is equilateral because all three sides are marked congruent. You might see a congruent symbol like that (points to triangle) or you might see that the measure of each side is equal. So there is two ways to show that the different sides are equal. On the second one let's look at it in perspective of the actual measure of the angles. We know that a triangle adds up to 180 degrees. So if we have three equal angles we are going to take that and divide it by three. So 180 divided by three is equal to 60. That means each of these angles have to measure 60 degrees. If the three angles measure 60 then it is an equilateral triangle. So let's look at the rules. The first rule is that all three sides of the triangle are congruent which just means they are equal, and all three angles have to be congruent, which are equal measures. In an equilateral triangle since you have triangle and it always adds to 180 the measure of the angles will always be 60. Hope this video was helpful.
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-
Review Geometry terms with this crossword puzzle
http://www.moomoomath.com/geometry-terms-crossword-puzzle-answers.html

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MooMoo Math and Science

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
Properties of a rhombus,rectangle, and a square
A rhombus,rectangle, and square are all polygons.
In addition each of these are quadrilaterals, which mean they have 4 sides.
A rhombus is a quadrilateral with 4 equal sides. A rhombus is most commonly recognized as a diamond, but they are not limited to this shape.
Let's take a look at 14 properties of a rhombus.
A Rhombus is a Quadrilateral, which means it has four sides, and the sides of a rhombus are congruent.
The opposite sides of a rhombus are parallel.
The opposite angles of a Rhombus are congruent.
The diagonals of a rhombus are perpendicular.
The diagonals of a Rhombus create form four congruent interior triangles.
The diagonals of a rhombus bisect each other which means they cut each other in half.
A rectangle has opposite sides that are congruent. in addition a rectangle has 4 right angles, and diagonals that are equal.
A rectangle is part of the quadrilateral family.
A rectangle is a plane shape with 4 sides.
In addition, it has several other properties
A rectangle is a 4 sided polygon, with opposite sides being parallel.
In addition, a rectangle has 4 right angles and the sum of the interior angles add to 360 degrees.
The diagonals of a rectangle are equal length
The diagonals bisect and create two equal triangles.
Opposite sides are equal and parallel
All squares are rectangles, but not all rectangles are squares.
A square is also a quadrilateral with four equal sides plus four right angles. The diagonals of a square bisect one another, plus bisect opposite angles which creates two angles of 45 degrees.
A square is a plane shape that is a quadrilateral that is 2D so it has length and width but not height.
A square has 4 congruent sides 4 equal sides.
Along with these 4 sides a square has 4 right angles
The diagonals are perpendicular and create 4 right angles.
The diagonals bisect each other.
The diagonals of a square also bisect opposite angles
and create equal 45 degree angles.
The diagonals create congruent triangles
Triangle ABC is congruent to ACD
A square can be considered a rhombus with four right angles or a square with 4 equal sides.
Rhombus properties| Quadrilateral Properties| Properties of Parallelograms | Square Rhombus | Rhombus Definition | Rectangle Definition |
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
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MooMoo Math and Science

http://www.theteachertoolkit.com/
See Leticia Garza, middle school math teacher, using Triangle Square Circle to assess her students' learning at the end of class. This strategy encourages students to reflect on their learning and process information presented in the lesson. Similar to other closing strategies, it asks students to pick out important pieces of information and to question anything they don’t completely understand. As a teacher, it is a tool that will be used to gauge understanding and determine if anything needs to be re-addressed in future lessons.
Find more tips and videos at: www.theteachertoolkit.com

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ESC Region 13

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SWATANTRA SINGH

Hello Friends
Problem Set 1 Math II | Similarity Class 10th Maharashtra Board New Syllabus
This is very important video, it contains questions of all the concepts, you will be able to learn the following things in this video
1. Ratio of areas of two triangles
2. similar triangles
3. congruent triangles
4. Test of similarity
5. Basic Proportionality Theorem
6. Theorem of ratio of areas of similar triangles
7. Practice Set 1.1
8.Practice Set 1.2
All questions will be explained.
Please watch this video till the end……..
Click the bell icon and subscribe our channel.
Don’t forget to subscribe my channel and also share and like the video, if you really like it.
Share your views.
Pawan Wagh
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Please watch: "English Paper Pattern Class 10th Maharashtra Board New Syllabus"
https://www.youtube.com/watch?v=EwH0aImbAHs
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Pawan Wagh Academy

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!
Join Our Geometry Teacher Community Today!
http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
How to find the area of an equilateral triangle.
The formula for the area of an equilateral triangle equals
1/2 base * height.
For more on equilateral triangles see
http://www.moomoomath.com/Equilateral-Triangle.html
Questions answered in this video:
What is the formula for finding the area of a triangle?
What is an equilateral triangle?
What measurements do you need to find the area?
How do you find the area of an equilateral triangle with sides of 10 units?
Related sites/Videos
Finding the area of an equilateral triangle
https://www.youtube.com/watch?v=g89KiWK171E
Area of an equilateral triangle
https://www.youtube.com/watch?v=UKQ65tiIQ6o
You may also enjoy…..
Area Triangle Coordinate Plane
https://www.youtube.com/watch?v=JY_kxkXWc48
Area of an Equilateral Triangle
https://www.youtube.com/watch?v=SYSIaLXKzKk
Area using SAS method
https://www.youtube.com/watch?v=usCptozPkWU
Finding altitude of a triangle
https://www.youtube.com/watch?v=d4YILnTV07E
Area of Triangle
https://www.youtube.com/watch?v=Dt5fi89gA-0
Triangle Area
https://www.youtube.com/watch?v=xz6gBA0M9FY
-~-~~-~~~-~~-~-
Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
-~-~~-~~~-~~-~-

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MooMoo Math and Science

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Wowsome Point

Geometer's Sketchpad Activity - SSS, SAS, HL, ASA
This is a high school Geometer Sketchpad activity intended to promote understanding of triangle congruent postulates and theorems.
This activity requires a full 50 minute class period with students who are already experienced with GSP.
Geometer's Sketchpad, GSP, provides dynamic constructions. This activity follows classical constructions on paper.
Postulate 19: Side-Side-Side Congruence postulate
SSS
If three sides of one triangle are congruent to three sides of another triangle, then the two triangles are congruent.
POSTULATE 20; Side-Angle-Side (SAS) Congruence Postulate
If two sides and the included angle of one triangle are congruent to two sides and the included angle of a second triangle, then the two
triangles are congruent.
THEOREM 4.5; Hypotenuse-Leg (HL) Congruence Theorem
If the hypotenuse and a leg of a right triangle are congruent to the hypotenuse and a leg of a second triangle, then the two triangles are congruent.
POSTULATE 21 Angle-Side-Angle (ASA) Congruence Postulate
If two angles and the included side of one triangle are congruent to two angles and the includes side of another triangle, then the two triangles are congruent.

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Jeffrey Bannish

✔️ LEARN 20 WORDS https://youtu.be/TSGdNMzlrcg
What does Congruent mean? Learn the meaning of Congruent as we define this advanced vocabulary word with a simple definition, pictures, example sentences, English pronunciation and audio.
Congruent definition (adjective) matching in type or makeup
Congruent pronunciation: kong-groo-uh nt
Examples of Congruent in a sentence:
1. Eating five chocolate bars is not congruent with your plan for losing weight.
2. While the pillows are the same color, they are not congruent because one is shaped like a triangle and the other is molded into a square.
3. Triangles are considered congruent when they have the same angles.
4. Since all of the stories in the collection deal with the topic of persecution, they are congruent in theme.
5. The suspect was released when the lab results proved his DNA sample was not congruent to the specimen found at the crime scene.
Congruent synonyms and other related words for Congruent
congruous, uniform, consistent, coincident, harmonious, consonant, unified, compatible, concordant, corresponding, coherent, correspondent, suitable, accordant, appropriate, comparable, conformable, same, agreeable, coinciding, equal, homogeneous, identical, united, agreeing, cohesive, coincidental, concurring, congenial, holistic
Dictionary Definition & Sentences Page
https://wordsinasentence.com/congruent-in-a-sentence/
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► http://VocabularyVideos.com - a memorable name that'll redirect you to our word of the day vocabulary videos.
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VocabularyHelp - Learn English Words With Meaning

Classifying Triangles and Triangle sum. ALL ANGLES ADD TO 180!

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Rock Ridge Math