Question

find the number of sides of a regular polygon such that the sum of its interior angle is 1260°
give an explanation...​

Answer 1

Answer:

9.

Step-by-step explanation:

Sum of interior angles of a regular polygon is given by the formula

(n - 2) × 180.

(n - 2) × 180 = 1260

n - 2 = 1260/180

n - 2 = 126/18

n - 2 = 7

n = 9

So the number of sides of polygon is 9.