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The sum of the interior angles of a closed traverse having n sides is calculated by which expression?

Correct answer: C. (n − 2) × 180°

  • A. n × 180°
  • B. (n + 2) × 180°
  • C. (n − 2) × 180°
  • D. (2n − 1) × 180°

Explanation

For a closed polygonal traverse, the interior angle sum is (n − 2) × 180°. The expression n × 180° does not account for the geometric reduction caused by the two sides used in triangulation.

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