如图,AB∥DE,AC∥DF,BE=CF.求证:△ABC≌△DEF.
如图,AB∥DE,AC∥DF,BE=CF.求证:△ABC≌△DEF.
已知,如图BE=CF,AB=DE,AC=DF,求证△ABC≌△DEF
如图,在△abc与△def中,如果ab=de,ac=df,be=cf,求证△abc全等于△bef
如图,在△ABC和△DEF中,AB=DF,AC=DE,BE=CF,DE=DF,试说明AC与DF的关系
如图,已知△ABC中,AB=AC,BE=CF.求证:DE=DF
如图,AB=DE,AC//DF,BC//EF,求证:△ABC≌△DEF
1.如图,AB=DE,AC//DF,BC//EF,求证:△ABC≌△DEF.
(1)已知:如图1,AB∥DE,AC∥DF,BE=CF.求证:AB=DE;
如图,AB=DE,AC∥DF,BC∥EF,求证△ABC全等于△DEF
如图4,已知AB//DE,AC//DF,BD=CE.(1)求证△ABC≌△DEF(2)若BF=5,CF=3,求BE长.
如图所示,已知AB=DF,AC=DE,BE=CF,求证三角形ABC≌三角形DEF
如图,AB=DE,AC=DF,BF=EC.求证:△ABC≌△DEF.