What is the measure of angle b?
A.
36°
B.
56°
C.
63°
D.
117°

Answer:
A. 36*
Step-by-step 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