Question

If each interior angle of a regular polygon is 144 degree. Find the number of sides in it.

Answer 1

Angle = 144
Then
Each exterior angle = 180-144=36
Then
No. Of side = 360/36= 10

Answer 2

180(n-2)= n×144
On solving 'n' we get:-
36n= 360
n=10 sides

Hope this helps you!! :)