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11 December, 17:20

The measure of each exterior angle of a regular polygon is 72 degrees. how many sides does the polygon have?

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  1. 11 December, 18:55
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    If the measure of each exterior angle is 72, the measure of each interior angle is then 180-72=108

    the sum of the interior angles of a polygon is (n-2) * 180, n is the number of sides

    (n-2) * 180=108*n

    180n-360=108n

    180n-108n=360

    n=5

    the polygon has 5 sides.
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