这个问题很简单啊三角形内角和是180°
∠abc+∠acb=120°
那么∠bac=180°-120°=60°
∠abe=180°-∠bae-∠aeb=180°-90°-60°=30°
∠acf=180°-∠cab-∠afc=180°-60°-90°=30°
∠ebc=∠abc-∠abe=66°-30°=36°
∠bcf=∠acb-∠acf=54°-30°=24°
∠bhc=180°-∠ebc-∠bcf=180°-36°-24°=120°