Question

Penn used the formula for the sum of the angles inside a polygon: Sum of the interior angles = (n - 2) 180, where n is the number of angles of the polygon. Penn's answer is 1,980 degrees. How many angles does the polygon have?

Answer 1

13

Explanation:

Sum of interior angles = (n-2)180

1980=(n-2)180

1980÷180=n-2

11=n-2

13=n