Question

The sum of the measure of the interior angles of a polygon is 1980°.

What polygon is it?


10-gon

11-gon

12-gon

13-gon

Answer 1

let the polygon have n sides

Answer 2

then the sum of its interior angles = (2n-4)right angles = (2n-4)90

Answer 3

By the question (2n-4)90 = 1980

Answer 4

I guess you will be able to find "n" now

Answer 5

Please medal me if you like my answer

Answer 6

thanks

Answer 7

mention not