∠EOF=135° 理由如下:
∵∠COD=90°
∴∠AOC+∠BOD=180°-∠COD=180°-90°=90°
∵OE平分∠AOC,OF平分∠BOD
∴∠EOC+∠DOF=1/2(∠AOC+∠BOD)=45°
∴∠EOF=∠COD+∠EOC+∠DOF=90°+45°=135°
∠EOF=135° 理由如下:
∵∠COD=90°
∴∠AOC+∠BOD=180°-∠COD=180°-90°=90°
∵OE平分∠AOC,OF平分∠BOD
∴∠EOC+∠DOF=1/2(∠AOC+∠BOD)=45°
∴∠EOF=∠COD+∠EOC+∠DOF=90°+45°=135°