Find The Sum Of The Measures Of The Interior Angles Of The Polygon. 15-gon. 20 -gon 628721 A 20 -gon has twenty sides. Substitute n 20 in.
Sum of the measures of the interior angles of a 21 sided polygon is 3420 Sum of the measures of the interior angles of a polygon of n sides is n-2xx180. Hence 180 s2 2340 or s2 2340180 13. Sum of interior angles n - 2 x 180 where n is the number of sides.
29 -gon 628721 A 29 -gon has twenty nine sides.
Find the sum of the interior angles of a 22-gon. Hence in a polygon with s sides or angles the sum of all the interior and exterior angles would be 180 s. 20 -gon 628721 A 20 -gon has twenty sides. Find the sum of the interior angles of a 22-gon.