Question

the sum of the interior angle of a polygon is 1980 degree. find the no. of sides of the polygon​

Answer 1

Answer:

Step-by-step explanation:

1980° = (n - 2) * 180.

(n - 2) = 1980 / 180 = 11.

 n = 13.

Therefore there are 13 sides in total.

Answer 2

formula for finding the sides is: (n - 2) *180 = sum of all interior angles

hence, ( n -2)*180 = 1980

n -2 = 11

n = 13 sides

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