Calculate the number of sides of a regular polygon, if:
the ratio between it's exterior angle and interior angle is 2:7
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let the exterior angle be 2x and interior angle be 7x
then x =180/9
20
therefore the exterior angle is 2x that is 40
and the number of Total sides is equal to 360 by 1 exterior angle is equal to 360 divided by 20 =18
then x =180/9
20
therefore the exterior angle is 2x that is 40
and the number of Total sides is equal to 360 by 1 exterior angle is equal to 360 divided by 20 =18
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