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17 June, 22:14

The exterior angles of an octagon are 42°, 55°, 39°, 20°, 62°, 45°, and 47°. What is the measure of the eighth exterior angle? Show equations and all work that leads to your answer.

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  1. 18 June, 00:00
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    The sum of exterior angles of a polygon = 360 °

    Thus, the eighth exterior angle is equal to

    360 ° - (42° + 55° + 39° + 20° + 62° + 45° + 47°) = 50 °
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