GeometryQuestion 445 of 550

The interior angles of a convex polygon add up to 1080°. How many sides does it have?

  1. 6
  2. 7
  3. 8
  4. 9
Show answer

Correct answer: 8

(n - 2) × 180 = 1080, so n - 2 = 6 and n = 8.

Test structure: ETEC guide to the GAT

Practice geometry

Questions last reviewed: 21 October 2026