A regular polygon has 150

^{o}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