Question

СРОЧНО!!!!!!!!!!!!!!!!!!!!!

Answer 1

∠ВAE =180-∠AEB-∠B=180-50-90=40°,  

∠C=180-∠A-∠B=180-50-54=76°

∠DBE=90-∠C=90-76=14°

∠ABO=50-∠DBE=36°

∠ AOB=180°-(∠BAE+∠ABO)=180-(40+36)=104°

Ответ: 104