已知,如图:AE⊥AB,BC⊥AB,AE=AB,ED=AC.求证:ED⊥AC.
已知,如图:AE⊥AB,BC⊥AB,AE=AB,ED=AC.求证:ED⊥AC.
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AE=AD,AB=AC,求证ED⊥BC
如图,AE⊥AB,BC⊥AB,CD⊥ED,ED=DC,求证:AE+BC=AB
如图,已知在△ABC中,AB=AC,点E在CA的延长线上,ED⊥BC于D.求证:AE=AF.
如图,已知AB=AE,BC=ED,AC=AD.
已知:如图,ED⊥AB,FC⊥AB,垂足分别为D、C,AE平行BF,且 AE=BF,求证:AC=BD
如图:AB=AC,ED=EC,△ABC∽△EDC求证:AE//BC
已知:如图6,△ABC中,∠A= 90°,AB = AC = BD ED⊥BC 求证:AE = DE =DC
已知,如图,△ABC中,AB=AC,E在CA的延长线上,且ED⊥BC.求证:AE=AF
已知,如图,在△ABC中,AB=AC,E在CA的延长线上,且ED⊥BC.求证:AE=AF.
已知:如图,AD=BC,AC=ED,AB=AE, 求证: 角ACD=角ADC