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A regular polygon has an interior angle of 150°. How many sides does it have?

  • A.8
  • B.10
  • C.12
  • D.15

Answer: C

If the interior angle is 150°, the exterior angle is 180° - 150° = 30°.

The number of sides 'n' of a regular polygon is given by n = 360° / (exterior angle).

n = 360° / 30° = 12.

The polygon has 12 sides (a dodecagon).

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