Question

How many sides does a regular polygon have if the interior angle is 160?

Answer 1

180- interior angle = exertior angle (interir and exterior angles are supplymentary
180-160=20
sum of all exterior angle =360 for all ploygon
number of sides 360/20=18
a ploygon with interior angle as 160,and exterior angle as 20 will have 20 sides