A regular polygon has 150o as the size of each interior angle. How many sides does it have?
-
A.
12 -
B.
10 -
C.
9 -
D.
8
Correct Answer: Option A
Explanation
Sum of interior angles of a polygon = each interior ∠ x n
(n-2)180 = 150 x n
180n – 360 = 150n
180n-150n = 360
30n = 360
n = 360/30
n = 12 sides