Question

The external angle of a regular polygon is 20 degree. How many sides does it have? What is the measure of each interior angle? What is the total measure of it's angles​

Answer 1

if external angle of a regular polygon is 20 degree so its sides are 18 because sum of exterior angle of a polygon is 360 degree

Answer 2

Answer:

if external angle of a regular polygon is 20 degree there will be 18 sides because sum of exterior angle of a polygon is 360 degree

And the measure of each interior angle = 180/18 = 10 ( interior angle sum of polygon = 180)

Step-by-step explanation:

Exterior = 360/20 = 18 sides

Interior = 180/18 = 10