Question

Each interior angle of a polygon is 108° .how many sides does it have?​

Answer 1

(180-108)= 72°

number of sides= 360°/n

= 360/72

= 5 sides

Answer 2

Here, the exterior angle is 72 deg. PPTY: sum of all exterior angles of any polygon is 360 deg. So there are 5 such exterior angles. Therefore, the given polygon has 5 sides.