# AA Similarity

## Two triangles are similar if two pairs of 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.

## AA Similarity

This concept teaches students how to identify whether or not two triangles are similar using AA Similarity.
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## AA Similarity

AA Similarity Interactive
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## Similar Triangle

AA Similarity Interactive
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• Video

## AA Similarity Principles

This video gives more detail about the mathematical principles presented in AA Similarity.
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## AA Similarity Examples

This video shows how to work step-by-step through one or more of the examples in AA Similarity.
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• Critical Thinking

## AA Similarity Discussion Questions

A list of student-submitted discussion questions for AA Similarity.
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• Real World Application

## AAA Similarity

How do you measure the height of the great pyramid?
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• Real World Application

## Crazy Quilt

Find out how similar triangles are used in quilting.
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• Study Guide