How many sides does a regular polygon have if each of its equal is a 9 degree ?
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Also, the number of exterior angles of a polygon is equal to the number of sides of a polygon. Hence the number of sides of the regular polygon is equal to 24.
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To find the value of an internal angle within this polygon, we can just multiply the number of triangles by 180 ° , then divide by the number of internal angles, which is nine. Excellent! So the interior angle of a 9 -sided polygon is 140 ° .
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