Answer:
This polygon has 18 sides.
Step-by-step explanation:
We are given a regular polygon. Each exterior angle of this polygon is 20°.
We have to find the number of sides.
Sum of exterior angles of every polygon irrespective of number of its sides is
360°.
As it is a regular polygon, all exterior angles are equal and are of 20°.
Number of sides of polygon becomes = [tex]\frac{360}{20}[/tex] = 18
