已知:如图3-50,AB=DE,直线AE,BD相交于C,∠B+∠D=180°,AF∥DE,交BD于F.求证:CF=CD.
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已知:如图3-50,AB=DE,直线AE,BD相交于C,∠B+∠D=180°,AF∥DE,交BD于F.求证:CF=CD.
已知:如图,AC/AD=AB/DE=BC/AE.求证AB=AE
已知,如图,AD/AC=DE/AB=AE/BC,求证AB=AE
已知,如图,AD:AC=DE:AB=AE:BC 求证:AB=AE
如图,已知AE=DE,AE⊥DE,AB⊥BC,DC⊥BC.求证:AB+CD=BC
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如图,已知AB平行DC,AB=DC,AE=CF,求证:BF=DE
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如图 已知ab垂直bc CD垂直BC AB=4 BC=7 CD=3 AE=DE 求证AE垂直DC
如图,已知AD/BD=AE/EC=4/3,则DE/BC=( ) AB/BD=( )如图,已知AD/BD=AE/EC=4/3,则DE/BC=( ) AB/BD=( )
已知:如图,AB=DC,AE=DF,CE=FB,求证:AF=DE
已知如图AB=DC,AE=DF,CE=FB求证AF=DE
如图,已知AB=DC AE=DF .CE=BF 求证:AF=DE
已知:如图,AB=CD,BC=DA,AE=CF.求证:DF=DE
如图,已知AB=DC,AE=DF,CE=FB,求证AF=DE
如图,已知AB=DC,AE=DF,CE=FB,求证:AF=DE
如图,已知AB=DC,AE=DF,CE=BF,求证:AF=DE
如图,已知AB=CD,AE=CF,DE=BF,求证AD=BC