按图填空:(1)∠AOB+∠BOC=______;(2)∠AOC+∠COD=______;(3)∠BOD-∠COD=______;(4)∠AOD-∠
按图填空:(1)∠AOB+∠BOC=______;(2)∠AOC+∠COD=______;(3)∠BOD-∠COD=______;(4)∠AOD-∠BOD=______;...
按图填空:(1)∠AOB+∠BOC=______;(2)∠AOC+∠COD=______;(3)∠BOD-∠COD=______;(4)∠AOD-∠BOD=______;(5)∠AOD=∠AOB+∠BOC+______=∠AOB+______=∠AOC+______;(6)∠BOC=∠AOD-∠AOB-______=∠AOC-______=∠BOD-______?
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(1)∠AOB+∠BOC=∠AOC; (2)∠AOC+∠COD=∠AOD; (3)∠BOD-∠COD=∠BOC; (4)∠AOD-∠BOD=∠AOB; (5)∠AOD=∠AOB+∠BOC+∠COD=∠AOB+∠BOD=∠AOC+∠COD; (6)∠BOC=∠AOD-∠AOB-∠COD=∠AOC-∠AOB=∠BOD-∠COD. 故答案为:(1)∠AOC;(2)∠AOD;(3)∠BOC;(4)∠AOB;(5)∠COD,∠BOD,∠COD;(6)∠COD,∠AOB,∠COD. |
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