摘要：如图.已知AB和CD都是直线.EO⊥AB.OF平分∠AOD.∠1=27°20′.求∠2. ∠3.∠4.∠5的度数. E C A O B D F | | | | |密| | | | | | | | | | | |封| | | | | | | | | | | |线| | | | | | | | | | | | | |内| | | | | | | | | |不| | | | | | | | | |准| | | | | | | | | |答| | | | | | | |卷| | | | | | | | | 六.综合性题

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