Question

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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Answer 1

Answer:

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. Let the number of sides be n. n = 18, an octadecagon.

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