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13 November, 05:41

A nonregular hexagon has five exterior angle measures of 55, 58, 69, 57 and 55. What is the measure of the interior angle adjacent to the sixth exterior angle?

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  1. 13 November, 08:44
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    The exterior angles will have a sum of 360. First find the missing exterior angle.

    360 - (55 + 58 + 69 + 57 + 55)

    360 - (294) = 66

    The interior and exterior angles are supplementary so the interior angle is 180-66

    = 114
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