如图,AB=DC,DE=BF,AE=CF 求证 (1)∠ABE=∠CDF (2)AB//CD (3) AD=BC 急求
如图,AB=DC,DE=BF,AE=CF 求证 (1)∠ABE=∠CDF (2)AB//CD (3) AD=BC 急求
如图,AD=BC AD//BC AE=CF,求证(1)DE=BF (2)AB//CD
如图,已知AB=CD,AE=CF,DE=BF,求证AD=BC
如图,已知AB平行CD,AE平行CF,DE=BF,求证:(1)AE=CF(2)AD平行BC
如图,已知AD=CB,AE=CF,DE=BF,求证AB=CD.
如图,已知AD=CB,AE=CF,DE=BF,求证:AB∥CD
如图,AB=DC,DE=BF,AE=CF.求证:DC∥AB
如图,已知AB平行DC,AB=DC,AE=CF,求证:BF=DE
如图,AD\\BC,AD=BC,AE=CF求证(1)DE=DF,(2)AB\\cd
如图,已知AB∥CD,AD∥BC.且AE=CF,DE=BF.求证∠E=∠F
如图,己知AB//DC,且AB=CD,BF=DE,求证:AE//CF,AF//CE.
1.如图,点E,F在BD上,且BF=DE,AF=CE,AE=CF求证:(1)AB=CD(2)AB//DC