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7 July, 18:21

The measure of each interior angle of a regular polygon is 140 degrees, how many sides does the polygon have

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  1. 7 July, 19:04
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    Using

    [ (n-2) 180]:n = 140

    (n-2) 180 = 140n

    180n - 360 = 140n

    180n - 140n = 360

    40n = 360

    n=360:4 = 90 sides
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