Question

Find the sum of the interior angle measures of a convex 13-gon (a thirteen-sided polygon).

Answer 1

1980

Explanation:

13 sides

Number of sides n=13

The sum of interior angles of polygon =(2n−4)×90°

=(2×13−4)×90°

=(26−4)×90°

=22×90°

We get,

=1980°

I hope this helps :)

I sincerely apologize if I'm wrong