1)∵OE平分∠AOC,OF平分∠BOD,∠COD=90°∴∠AOE+∠BOF=1/2(∠AOC+∠BOD)=1/2*(180°-90°)=45°2)∵OE平分∠AOC,OF平分∠BOD,∠COD=90°∴|∠AOC-∠BOD|=180°-∠COD=90°|∠AOE-∠BOF|=1/2|∠AOC-∠BOD|=1/2*90°=45°
∠AOE+∠BOF=45