Answer:
Option D
a+3b=8
D is correct
Step-by-step explanation:
(12 - 2) * 180 = 1,800/12 = 150
(8 - 2) * 180 = 1,080/8 = 135
B. 8 sides
the last one if I'm correct
but im not sure I always second guess
yes because of a postulate or a theorem
