Question

A regular polygon of n sides has its sum of interior

angles as 900° What is n?
A. 5
B.6
C.7
D. 8
​

Answer 1

C. 7

Explanation:

n is the number of sides of the polygon

`(n - 2) * 180 = 900`

Divide both sides of the equation by 180

`((n - 2) * 180)/(180) = (900)/(180) \\ n - 2 = 5 \\ n = 5 + 2 \\ n = 7`