If the sum of all interior angles of a regular polygon is

Home » Aptitude » Plane Geometry » Question

If the sum of all interior angles of a regular polygon is 14 right angles, then its number of sides is

1. 8
2. 9
3. 7
4. 6

Correct Option: B

We know that Sum of all interior angles of a regular polygon of n sides = (2n – 4) right angles
According to question ,
∴ 2n – 4 = 14
⇒ 2n = 14 + 4 = 18

⇒ n =	18	= 9
	2