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      Question

      When each internal angle of a

      regular polygon measures as 144°. Determine the number of sides in the polygon.
      A 18 Correct Answer Incorrect Answer
      B 10 Correct Answer Incorrect Answer
      C 12 Correct Answer Incorrect Answer
      D 15 Correct Answer Incorrect Answer

      Solution

      ATQ, 1440 = 1800 × (n-2)/n 144n = 180n -360 360 = 36n n = 10

      So, the polygon has 10 sides.

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