Question

Give a polygon with 13 sides, find sum of the measure of its interior angles

Answer 1

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Answer 2

sum  of interior angles = 1980°

The sum of interior angle of a polygon  = (n - 2) 180

where

n = number of sides

Therefore,

n = 13

sum  of interior angles = (13 - 2) 180

sum  of interior angles = 11 × 180

sum  of interior angles = 1980°

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