# Congruent Triangles

## Sides and angles have the same size.

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.

## Congruent Triangles

by CK-12 //basic
Determine whether two triangles are congruent.
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• Video

## Congruent Triangle Proof Example

by CK-12 //basic
This video shows you just one of the many examples a triangle may be congruent, via the AAS rule.
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## 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

## Congruent Triangles Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on congruent triangles.
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## Congruent Triangles Examples - Basic

by CK-12 //basic
This video provides the student with a walkthrough of one or more examples from the concept "Congruent Triangles".
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