Ответ:
∠BOC=180°-∠COD-∠DOE=180°-90°-40°=50°
∠AOB=180°-∠BOC-∠COD=180°-50°-90°=40°
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Ответ:
∠BOC=180°-∠COD-∠DOE=180°-90°-40°=50°
∠AOB=180°-∠BOC-∠COD=180°-50°-90°=40°