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GATE 2021 EE – Question 3

General Aptitude · Quantitative Aptitude: Algebra, Geometry and Mensuration · 1 mark · Multiple choice

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

  1. 396
  2. 324
  3. 216
  4. 144

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Show answer and explanation

Correct answer: (D) 144

Explanation

Each interior angle of a regular $n$-gon is $\frac{(n-2)\times180^\circ}{n}=\frac{8\times180^\circ}{10}=144^\circ$.