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29 March, 15:36

The external angle of a regular polygon is 200. How many sides does it have? What is the measure of each interior angle? What is the total measure of its angles.

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  1. 29 March, 16:02
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    An 18 sided shape.

    Since the sum of the exterior angles of a polygon is 360° and an angle of the regular polygon is 20°, then 360° / 20° is the number of sides. We find the answer = 18, an octadecagon
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