Skip to content / Đến nội dung
ThichHocToan.com

FMO 2026 - Grade 8 - Preliminary - Paper 02 Question 8

FMO · FMO 2026 - Grade 8 - Preliminary - Paper 02

Question 8

The polygon below is formed by three isosceles triangles EFC, EAC and BAC. Given that AG is the angle bisector at A and ∠FEC = 50°, ∠ABC = 90°. Find the measure of angle ∠GAC?

Question illustration



Editorial clarification of the drawing: EF = EC, EA = EC, BA = BC; F,C,B are collinear and AG bisects ∠EAC.
  1. 40°
  2. 30°
  3. 45°
  4. 50°
  5. 35°