A rectangular polygon has 150o as the size of each interior angle. How many sides…

A rectangular polygon has 150^o as the size of each interior angle. How many sides has the polygon?

Correct Answer: Option A

Explanation

A rectangular polygon has each interior angle to be 150^o
let the polygon has n-sides
therefore, Total interior angle 150 x n = 150n
hence 150n = (2n – 4)90
150n = 180n – 360
360 = (180 – 150)n
30n = 360
n = 12