如图,已知AB=DE,AC=DF,BE=CF.求证:AC‖DF.
如图,已知AB=DE,AC=DF,BE=CF.求证:AC‖DF.
如图,AB=DE,AC等于DF,BE=CF.求证AB∥DE,AC∥DF.
如图,已知AB=DF,AC=DE,BE=CF.求证:∠A=∠D
如图,已知AB平行DE,AB=DE,BE=CF.求证:AC平行DF
(1)已知:如图1,AB∥DE,AC∥DF,BE=CF.求证:AB=DE;
如图,已知△ABC中,AB=AC,BE=CF.求证:DE=DF
已知如图 AB=AC,DE=DF,求证BE=CF
如图,AB=DE,AC=DF.BF=CF,求证AB//DE,AC//DF
已知如图DE垂直于AB,DF垂直于AC,垂足分别为E,F,BD=CD,BE=CF 求证AD平分角B
已知:如图,E,C是BF上两点,且BE=CF,AB=DE,AC=DF,求证:AB平行DE,AC平行DF
如图 ab=ac be=cf 求证de= df
已知,如图BE=CF,AB=DE,AC=DF,求证△ABC≌△DEF