Question

If an exterior angle measure of a regular

polygon is 20°, how many sides does the
polygon have? What is the measure of each interior angle?

Answer 1

n=18 sides

Explanation:

Given: Exterior angle =20°

Find: sides of a regular polygon

Solution: θ=(360°)/side , θ=20°

Let n= number of sides

θ=360°/n

20=360/n

n=360/20

n=18