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      Question

      What will be the measure of each interior angle of a

      regular polygon whose sides are 20.
      A 168Β° Correct Answer Incorrect Answer
      B 140Β° Correct Answer Incorrect Answer
      C 156Β° Correct Answer Incorrect Answer
      D 162Β° Correct Answer Incorrect Answer

      Solution

      Let each ineterior angle of the regular polygon of N sides is I & each exterior angle of the same polygon is E. So E = 360/N = 360/20 = 18 So I + E = 180 or I = 180 - 18 = 162Β°

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