GeometryQuestion 428 of 550

The angles of a triangle are in the ratio 1 : 2 : 3. What is the largest angle?

  1. 60°
  2. 120°
  3. 90°
  4. 30°
Show answer

Correct answer: 90°

The parts add up to 6. One part = 180 ÷ 6 = 30°. The largest angle = 3 × 30 = 90°.

Test structure: ETEC guide to the GAT

Practice geometry

Questions last reviewed: 21 October 2026