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# SAS Triangle Congruence

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Levels are CK12'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.

## SAS Triangle Congruence

by CK-12 //basic

Prove two triangles are congruent with the Side-Angle-Side shortcut.

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## SAS Triangle Congruence

This concept introduces students to the SAS Triangle Postulate and how to prove that two triangles are congruent given only information about two pairs of sides and included angles.

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• Video

## SAS Triangle Congruence Principles - Basic

by CK-12 //basic

This video provides the student with a walkthrough on SAS triangle congruence.

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• Video

## SAS Triangle Congruence Examples - Basic

by CK-12 //basic

This video provides the student with a walkthrough of one or more examples from the concept "SAS Triangle Congruence".

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• Video

## SAS Triangle Congruence Principles

This video gives more detail about the mathematical principles presented in Basic Geometric Definitions.

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• Video

## SAS Triangle Congruence Examples

This video gives more detail about the mathematical principles presented in Basic Geometric Definitions.

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• Video

## Introduction to Congruent Triangles

by CK-12 //basic

Defines congruent triangles and states the ways to prove two triangles are congruent.

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• Video

## Determining If Two Triangles are Congruent

by CK-12 //basic

Provides practice problems to determine if two triangles are congruent.

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• Video

## Example 1: Prove Two Triangles are Congruent

by CK-12 //basic

Provides a two column proof that two triangles are congruent.

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• Video

## Example 1: Prove Two Triangles are Congruent

by CK-12 //basic

Provides a two column proof that two triangles are congruent.

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## SAS Triangle Congruence Quiz

Nine question quiz. Students must examine diagrams of triangles and the coordinates of triangles and determine if they are congruent using the SAS congruency theorem. Students must justify their reasoning. Students must also draw (on the coordinate plan) an example and non-example of triangles that can be proven congruent using the SAS theorem and then explain their reasoning.

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• Interactive Exercise

## Acronym--SAS

Checks your understanding of SAS proof method.

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• Interactive Exercise

## What's an Included Angle?

Checks your understanding of SAS proof method.

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• Practice

## SAS Triangle Congruence Practice

by CK-12 //basic

Practice SAS Triangle Congruence questions

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• Interactive Exercise

## Proof by Side Angle Side

Checks your understanding of SAS proof method.

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• Interactive Exercise

## Acronym--SAS

Checks your understanding of SAS proof method.

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• Interactive Exercise

## What's an Included Angle?

Checks your understanding of SAS proof method.

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• Critical Thinking

## SAS Triangle Congruence Discussion Questions

A list of student-submitted discussion questions for SAS Triangle Congruence.

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## SAS Triangle Congruence Pre Read

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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## SAS Triangle Congruence Post Read

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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## SAS Triangle Congruence KWL Chart

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

## SSS Triangle Congruence

Do a hands on activity to help conceptualize congruent triangles.

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• Study Guide

## Triangle Congruence Study Guide

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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