Geometry

JKSSB Class-IV & MTS · Mathematics · 100 practice questions with answers and explanations: 32 Easy, 36 Medium, 32 Hard.

Sample questions

Sample Easy question 1

What is the sum of the interior angles of a decagon (10 sides)?

  1. 1340°
  2. 1440°
  3. 1540°
  4. 1640°
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Answer: B. Sum = (10-2) × 180° = 1440°.

Sample Medium question 2

The angles of a triangle are in the ratio 1:1:2. Find the largest angle.

  1. 85°
  2. 88°
  3. 90°
  4. 92°
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Answer: C. Total parts = 4, each part = 45°, largest angle = 2 × 45° = 90°.

Sample Hard question 3

In a right triangle, one leg is 8 cm and the hypotenuse is 17 cm. Find the other leg.

  1. 13 cm
  2. 14 cm
  3. 15 cm
  4. 16 cm
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Answer: C. Other leg = √(17² - 8²) = √225 = 15 cm.

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