REGULAR POLYGONS 1

Find the interior angle of a regular polygon with 20 sides.

Solution

n = 20

i = (n-2)180

         n

i = (20-2)180

          20

i = (18) x 180⁹

          20₁

i = 18 x 9

i = 162

Hence the interior angle is 162⁰

TRY THIS………………………………………..

Find the interior angle of a regular polygon with 20 sides.