Question

A regular polygon i uch that it interior angle exceed three time the exterior angle by 20 degree find the number of ide the polygon ha

Answer 1

9

Explanation:

exterior angle=x⁰

interior angle=3x⁰+20⁰

3x⁰+20⁰+x⁰=180⁰

4x=160⁰

x=40⁰

number of sides = 360⁰/exterior angle

360⁰/40⁰= 9sides