Find the sum of the interior angle measures of a convex 20-gon (a twenty-sided polygon).

3,240°

Step-by-step explanation:

Sum of interior angles of n-sided polygon is given as (n - 2)180. Where n = number of sides of the polygon.

Sum of angles of a convex 20-gon = (20 - 2)180

= (18)180 = 3,240°

Sum of interior angles of a convex 20-gon = 3,240°

the answer is 1030 it's very simple math.