如图,已知：AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证：ED⊥BC.

如图,已知AE=AD,AB=AC,求证ED⊥BC 如图,已知AD//BC,AD=BC,AE⊥AD,AF⊥AB,AE=AD,AB=AF.求证：AC=EF. 如图,已知AE⊥AD,AF⊥AB,AF=AB,AE=AD=BC,AD‖BC,求证AC⊥EF 已知:如图,AC/AD=AB/DE=BC/AE.求证AB=AE 如图,AD∥BC,AD=BC,AE⊥AD,AF⊥AB,且AE=AD,AF=AB,求证：AC=EF. 如图,AD⊥AE,AB垂直AC,AD=AE,AB=AC,AD⊥AE ,AB=AC,求证：三角形ABD≌三角形ACE 已知，如图：AE⊥AB，BC⊥AB，AE=AB，ED=AC．求证：ED⊥AC． 如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证BE⊥CD 已知：如图,AD=BC,AC=ED,AB=AE, 求证： 角ACD=角ADC 已知:如图,AD/AB=AE/BC求证：AD/AE=DB/EC和AB/DB=AC/EC 已知：如图AE垂直AB,BC垂直AB,AE=AB,ED=AC,求证：ED垂直于AC 如图，已知AB=AE，BC=ED，AC=AD．