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Warm Up

Angle-Angle (AA~) Similarity PostulateIf two angles of one triangle are congruent to two angles of another triangle, then the two triangles are similar.A

B C

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E F

Side-Side-Side (SSS~) Similarity THM

If the corresponding sides of two triangles are proportional, then the triangles are similar.

A

B C

D

E F

Side-Angle-Side (SAS~) Similarity THM

If the lengths of two sides are proportional and the included angle is congruent, then the triangles are similar

A

B C

D

E F

Ex. Determine whether the triangles are similar. If so, tell which similarity test is used and complete the statement.

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1. Two sides are proportional2. Included angle is congruent

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