November 16, 2011
Notes 7.4
AA Similarity
A Postulate for
Similar Triangles
Goal:
· Use the AA Similarity Postulate to prove
triangles similar.
· Use similar triangles to deduce
information about segments or angles.
AA Similarity Postulate
· If two angles of one triangle are
congruent to two angles of another
triangle, then the triangles are similar.
November 16, 2011
Tell whether the triangles are similar or not
similar.
A
a.
E
C
D
______
b. y = ______
B c.
= ______
so x = ______
November 16, 2011