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Q.

The sum of the interior angles of a polygon is 10 right angles. Then the number of sides is

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a

7

b

8

c

6

d

5

answer is C.

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Detailed Solution

Each interior angle of a regular polygon

$(n - 2) 180^{\circ} = 900 °$

$n - 2 = \frac{900 °}{180 °}$

$n = 7$

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The sum of the interior angles of a polygon is 10 right angles. Then the number of sides is