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Level 115

Similarity & Congruence of Triangles


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SSS (Side-Side-Side) Congruence
Three pairs of corresponding sides are congruent.
SAS Congruence
Two pairs of corresponding sides and their included angle are congruent.
ASA Congruence
Two pairs of corresponding angles and their included sides are congruent
AA Similarity
Two pairs of corresponding angles are congruent.
HL (hypotenuse-leg) Congruence
If the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and corresponding leg of another right triangle, the triangles are congruent.
AAS Congruence
Two pairs of corresponding angles and the corresponding non-included sides are congruent
SSS Similarity
Three pairs of corresponding sides are proportional across each set of sides.
SAS Similarity
Two pairs of corresponding sides are equally proportional and their included angle is congruent.