Question

Find the number of side of a regular polygon if the exterior angle is one ninth of its in




terior angle.​

Answer 1

The interior angles of a regular polygon are each 120°.Calculate the number of sides. The interior angles are 120°, so the exterior angles are 180° - 120° = 60°. The exterior angles add up to 360°, so if we divide 360° by 60° we find there are 6 exterior angles

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