Question

if the sum of the measures of the interior angles of a polygon is 1980°, how many sides does the polygon have?

Answer 1

The polygon has 13 sides.

Explanation:

The sum of the interior angles of a polygon is (n - 2) * 180, where n is the number of sides. This formula can be set equal to the sum of the interior angles to determine how many sides it has.

(n - 2) * 180 = 1980

180n - 360 = 1980

180n = 2340

n = 13