GATE AG 2021 • Q3 MCQ • 1 Mark

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Data Interpretation

Question Statement:

For a regular polygon having 10 sides, the interior angle between the sides of the polygon, in degrees, is:

Options:

  • (A) 396
  • (B) 324
  • (C) 216
  • (D) 144

Official Answer Key:

D

Step-by-Step Solution & Explanation

Interior angle of a regular n-gon = (n − 2) × 180° / n. For n = 10: (10 − 2) × 180 / 10 = 8 × 180 / 10 = 1440/10 = 144°. This matches option (D).

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