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# Congruent Triangles

## Sides and angles have the same size.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Congruent Triangles

by CK-12 //basic

Determine whether two triangles are congruent.

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## Congruent Triangles

by Christine Zadylak //basic

Determine whether two triangles are congruent.

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## Congruent Triangles.

by Scott Lamie //at grade

This concept teaches students what it means for two triangles to be congruent and how to identify corresponding parts of congruent triangles.

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• PLIX

## Congruent Triangles

by CK-12 //basic

Congruent Triangles Interactive

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• Video

## Congruent Triangle Proof Example

by CK-12 //basic

This video shows you just one of the many examples a triangle may be congruent, via the AAS rule.

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• Video

## Congruent and Similar Triangles

by CK-12 //basic

Explains congruent and similar triangles. Shows how to determine if triangles are similar.

2
• Video

## Congruent Triangles Principles - Basic

by CK-12 //basic

This video provides the student with a walkthrough on congruent triangles.

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• Video

## Congruent Triangles Examples - Basic

by CK-12 //basic

This video provides the student with a walkthrough of one or more examples from the concept "Congruent Triangles".

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• Video

## Congruent Triangles Principles

by CK-12 //at grade

This video gives more detail about the mathematical principles presented in Congruent Triangles.

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• Video

## Congruent Triangles Examples

by CK-12 //at grade

This video shows how to work step-by-step through one or more of the examples in Congruent Triangles.

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## Congruent Triangles Quiz

by CK-12 //at grade

Congruent Triangles quiz.

2
• Practice
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## Congruent Triangles Practice

by CK-12 //at grade
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• Critical Thinking

## Congruent Triangles Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Congruent Triangles.

1

## Congruent Triangles Pre Read

by CK-12 //at grade

To activate prior knowledge, make personal connections, reflect on key concepts, encourage critical thinking, and assess student knowledge on the topic prior to reading using a Quickwrite.

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## Congruent Triangles Post Read

by CK-12 //at grade

To stress understanding of a concept by summarizing the main idea and applying that understanding to create visual aids and generate questions and comments using a Concept Matrix.

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• Pre and Post Read

## Congruent Triangles KWL Chart

by CK-12 //at grade

With this KWL Chart, reflect on your prior knowledge of a concept, come up with questions you’re curious about, and come up with answers from the reading.

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• Real World Application

## Domes and Homes

by CK-12 //at grade

Find out how you can build structurally efficient domes from triangles.

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• Real World Application

## Congruent Triangles

by CK-12 //at grade

How did the Egyptians build pyramids made up perfect congruent triangles?

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• Study Guide

## Triangle Congruence Study Guide

by CK-12 //at grade

This study guide is an overview of triangle congruence: defining corresponding parts of congruent triangles, postulates and theorems for congruences (SSS, SAS, AAS, ASA), and postulates and theorems for congruences for special triangles.

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• Flashcards

## Triangle Congruence Flashcards

by CK-12 //basic

These flashcards help you study important terms and vocabulary from the concepts on Congruent Triangles, Congruence Statements, Third Angle Theorem, and triangle congruence postulates: SSS, SAS, SAS, ASA, AAS, and HL.

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