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If the interior angle of a polygon is four times its exterior angle,find the number of sides and the sum of the interior angles.
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(((2n-4)×90)÷n ) = (4×360)÷n
then Number of sides is =
10
exterior angle of polygon is given by 360÷n
then Number of sides is =
10
exterior angle of polygon is given by 360÷n
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