The sum of the measures of the interior angles of a polygon is 2880 degrees How many sides does the polygon have?

For a polygon with n sides, the sum of its interior angles is 180(n − 2) degrees. Set 180(n − 2) = 2880, then divide by 180 to get n − 2 = 16, so n = 18. The polygon has 18 sides, which is choice C.

AI-written and checked against the verified answer.