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12 December, 13:09

Find the number of sides of a regular polygon if one interior angle is 120 degrees.

3

4

5

6

+5
Answers (1)
  1. 12 December, 13:28
    0
    Each Interior Angle = 180 - (360 / # sides)

    120 = 180 - (360 / # sides)

    (360 / # sides) = 60

    # sides = 360 / 60

    # sides = 6
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