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# SAS Similarity

## Triangles are similar if two pairs of sides are proportional and the included angles are congruent.

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.

## SAS Similarity

by CK-12 //basic

Use the SAS Similarity Theorem to determine if triangles are similar.

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## SAS Triangle Similarity

Prove and use the SAS criterion for triangle similarity.

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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.

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• Video

## SAS Similarity Principles - Basic

by CK-12 //basic

This video provides the student with a walkthrough on SAS similarity.

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• Video

## SAS Similarity Examples - Basic

by CK-12 //basic

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

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• Video

## SAS Similarity Principles

This video gives more detail about the mathematical principles presented in SAS Similarity.

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• Video

## SAS Similarity Examples

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

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• Video

## Similar Triangles Using Side-Side-Side and Side-Angle-Side

by CK-12 //basic

Explains how to determine if two triangles are similar using SSS and SAS.

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• Interactive Exercise

## Are The Two Triangles Similar (part 2)?

Checks your understanding of proportional figures.

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• Interactive Exercise

## Which Similarity Theorem (part 2)?

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Type of Similarity (part 2)?

Checks your understanding of similar triangles.

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• Practice
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## SAS Similarity Practice

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• Interactive Exercise

## How are Triangles Similar by AA?

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Triangle AA Similarity True or False

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Triangle AA Similarity and Proportionality True or False

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Given Some Information About Two Triangles, Are They Similar

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Given Some Information About Two Triangles, Are They Similar (part 2)

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Given Two Triangles, Are They Similar?

Checks your understanding of similar triangles.

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• Interactive Exercise

## Are The Two Triangles Similar (part 2)?

Checks your understanding of proportional figures.

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• Interactive Exercise

## Similarity by AA, SSS or SAS?

Checks your understanding of how triangles can be similar.

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• Interactive Exercise

## Similarity Test True or False

Checks your understanding of the Similarity Test.

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• Interactive Exercise

## Which Similarity Theorem?

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Type of Similarity?

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Similarity Theorem (part 2)?

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Type of Similarity (part 2)?

Checks your understanding of similar triangles.

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• Critical Thinking

## SAS Similarity Discussion Questions

A list of student-submitted discussion questions for SAS Similarity.

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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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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 Similarity 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

## AAA Similarity

How do you measure the height of the great pyramid?

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• Study Guide

## Polygon Similarity Study Guide

This study guide looks at similar polygons, scale factor (ratio), and triangle similarity.

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• Flashcards

## SAS Similarity Flashcards

by CK-12 //basic

These flashcards help you study important terms and vocabulary from SAS Similarity.

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