7.3 Day 1
AA Similarity Postulate
These triangles are similar. Why? Angle­Angle Similarity Postulate
If two angles of one triangle are congruent to two angles of another triangle, then the two triangles are similar.
E
B
D
C
A
Write the statement of proportionality.
Write a similarity statement.
33
L
M
Why are the triangles similar?
106O
N
20
Q
36O
30
P
F
7.3 Day 1
AA Similarity Postulate
Can you prove that the triangles are similar? The triangles are similar. Find the value of the variable.
R
33O
4
V
6
75O
Q
72O
P
W
5
x
Find the value of the variable.
36
48
y
y­20

Notes 9B Special Right Triangles_45 -45

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