Answer:
9 sides
Step-by-step explanation:
7y + 2y = 180
9y = 180
y =20
so, 2y, the exterior angle is 2 x 20 = 40
Divide 360 by 40 = 9
A%7.2= ( 7.5№) =(+--+) this is the best answer
option c
c doesnt follow a pattern
