Question

1. Prove that the interior angle of a regular pentagon is three times as the exterior angle of a regular decagon.2. The sum of the interior angles of a polygon is six times the sum of its exterior angles. Find the number of side
3.The exterior angle of a regular polygon is one-eighth the interior angle. Find the number of sides.

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Answer 1

Step-by-step explanation:

2 times of a 180+side=angle