Question

Prove that the interior angle of a regular pentagon is 3 times the exterior angle of a regular decagon.

Answer 1

A pentagon has sides so interior angle=(n-2)180/n where n=5
=108 degrees
Sum of external angles of any polygon is 360 degrees
So 360/10=36 degrees
3(36 degree)=108 degree
Hence Proved
PLEASE MARK AS BRAINLIEST IF HELPFUL!