Question 50

The sum of the interior angles of a polygon is 1620. The number of sides of the polygon must be

Solution

Let the number of sides of the polygon be $$n$$

Sum of interior angles of any polygon = $$(n-2)\times180=1620$$

=> $$n-2=\frac{1620}{180}=9$$

=> $$n=9+2=11$$

=> Ans - (B)

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