# What will be the Number Sides of the Polygon? If

The sum of the interior angles of a polygon is 1440^{0 }. The number of sides of the polygon is

- 11 m
- 30 m
- 40 m
- 50 m

**Answer: (1) 11**

**Explanation:-**

**Formula-**

**The sum of interior angle of a polygon = (n – 2) 180 degree.**

**Where, n – number of sides of a polygon.**

Then,

(n – 2) 180 = 1440

n – 2 = 1440 /180

n – 2 = 9

n = 9 + 2 = 11

n = 11

Hence, the answer is (1) 11.