Find the sum of the interior angles of a polygon with 12 sides, in degrees.

Answer and explanation

Correct answer: A. 1800

  1. Step 1: Sum of interior angles .
  2. Step 2: .
Answer
1800.
Why not the others: 2160: the formula uses instead of . 1980: the formula uses . 360: that is the sum of exterior angles.

Practise more Measures, Shape and Space.

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