已知,如图6-7,AD=AE,AB=AC,∠DAE=∠BAC求证:BD=CE

如图,已知AD/DB=AE/EC,求证 :AD/AB=AE/AC. 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：AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证：ED⊥BC. 已知:如图,AD/AB=AE/BC求证：AD/AE=DB/EC和AB/DB=AC/EC 已知:如图,AD/AB=AE/BC求证：AD/AE=DB/EC和AB/DB=AC/EC 如图,DE//BC,请问AD:AC=AE:AB?AD:AE=AB:AC? 已知,如图6-7,AD=AE,AB=AC,∠DAE=∠BAC求证:BD=CE 已知如图AB=AC,求证AB²=AD×AE 如图,已知AD//BC,AD=BC,AE⊥AD,AF⊥AB,AE=AD,AB=AF.求证：AC=EF. 已知,如图AB=AC,AD=AE,LBAC=LDAE,求证：LB=LC 已知；如图,ab=ac,bd=ce,ad=ae.求证be=cd. 全等三角形如图,已知AB=AC,AD=AE,求证BD=CE. 如图,已知AB=AC,AD=AE.求证BD=CE 如图13,已知AB=AC,AD=AE,求证BD=CE 如图,已知,AB=AC,AD=AE,求证：BD=CE 如图,已知AB=AC,AD=AE,求证：BD=CE