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15 December, 02:22

A regular polygon has an interior angle of 168 degrees. How many side does it have?

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  1. 15 December, 04:09
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    Sum of the interior angles of a regular polygon = (n-2) x 180 degrees

    Each interior angle = (180n-360) / n

    168 = (180n-360) / n

    168n=180n-369

    -12n=-360

    12n=360

    n=30
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