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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.
• Video

## SAS Similarity Principles

by CK-12 //at grade

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

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• Video

## SAS Similarity Examples

by CK-12 //at grade

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

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• Interactive Exercise

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

by CK-12 //at grade

Checks your understanding of proportional figures.

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• Interactive Exercise

## Which Similarity Theorem (part 2)?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Type of Similarity (part 2)?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Practice
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## SAS Similarity Practice

by CK-12 //at grade
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• Interactive Exercise

## How are Triangles Similar by AA?

by CK-12 //at grade

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Triangle AA Similarity True or False

by CK-12 //at grade

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Triangle AA Similarity and Proportionality True or False

by CK-12 //at grade

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

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

by CK-12 //at grade

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

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

by CK-12 //at grade

Checks your understanding of AA Triangle Similarity.

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• Interactive Exercise

## Given Two Triangles, Are They Similar?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Interactive Exercise

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

by CK-12 //at grade

Checks your understanding of proportional figures.

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• Interactive Exercise

## Similarity by AA, SSS or SAS?

by CK-12 //at grade

Checks your understanding of how triangles can be similar.

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• Interactive Exercise

## Similarity Test True or False

by CK-12 //at grade

Checks your understanding of the Similarity Test.

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• Interactive Exercise

## Which Similarity Theorem?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Type of Similarity?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Similarity Theorem (part 2)?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Interactive Exercise

## Which Type of Similarity (part 2)?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Critical Thinking

## SAS Similarity Discussion Questions

by CK-12 //at grade

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

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## SAS Similarity 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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## SAS Similarity 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

## SAS Similarity 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

## AAA Similarity

by CK-12 //at grade

How do you measure the height of the great pyramid?

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• Study Guide

## Polygon Similarity Study Guide

by CK-12 //at grade

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

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