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      Question

      Find the number of sides in a polygon in which each

      internal angle is 120° ?
      A 8 Correct Answer Incorrect Answer
      B 6 Correct Answer Incorrect Answer
      C 2 Correct Answer Incorrect Answer
      D 12 Correct Answer Incorrect Answer

      Solution

      Internal Angle = ((n-2) × 180)/n According to the question, ((n-2) × 180)/n = 120° 3n – 6 = 2n n = 6

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