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# Similarity by AA, SSS, SAS

## Proving triangles similar with congruent angles and proportional sides.

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.

## SSS Similarity

This concept teaches students to decide whether or not two triangles are similar using SSS Similarity.
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## SAS Similarity

This concept teaches students to decide whether or not two triangles are similar using SAS Similarity.
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• PLIX

## Similar Sides, Similar Triangles

Similarity by AA, SSS, SAS Interactive
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• PLIX

## Corresponding Sides of Similar Triangles

Similarity by AA, SSS, SAS Interactive
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• PLIX