题文
由图填空:
⑴∠AOC=_________+___________;
⑵∠AOC-∠AOB=____;
⑶∠COD=∠AOD-___;
⑷∠BOC=____________-∠COD;
⑸∠AOB+∠COD=______________-______________
由图填空:
⑴∠AOC=_________+___________;
⑵∠AOC-∠AOB=____;
⑶∠COD=∠AOD-___;
⑷∠BOC=____________-∠COD;
⑸∠AOB+∠COD=______________-______________
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