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8 June, 23:40

In a regular polygon, the ratio of the measure of the exterior angle to the measure of its adjacent interior angle is 1 to 4. how many sides does the polygon have?

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  1. 9 June, 00:04
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    A polygon's exterior angle is 180 degrees.

    So if you have a regular n-gon where one of the interior angles is 4 times larger than the adjacent exterior angle, then the sum of the interior angles must be 4 times the sum of the exterior angles, the equation should look like this,

    180 (n-2) = 4 (180)

    then solve for n,

    180n-360=720

    180n = 1080

    then divide both sides by 180 and the answer will be n=6
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