Question

What is the measure of angle b?

A.
36°

B.
56°

C.
63°

D.
117°

Answer 1

A. 36*

Explanation:

first find angle a:

180-117=63

a=63

then find angle b by subtracting 81 and 63 from 180

180-81=99

99-63=36

angle b = 36