What is the number of sides of a regular polygon if the sum of its interior angles is 1,260 degrees?
Show answer & explanation
Correct answer: A
Explanation
Sum of the interior angles of a polygon = (n - 2) × 180°
Given:
(n - 2) × 180 = 1260
n - 2 = 1260/180
n - 2 = 7
n = 9