如图,已知AB∥CD,AB=CD,求证:AC与BD平分.
如图,已知AB∥CD,AB=CD,求证:AC与BD平分.
已知:如图AC∥BD,AB∥CD,AE和BE分别平分∠CAB和∠DBA,CD过点E.求证:CD=AC+BD
已知:如图,AB=BD,AC⊥CD,AB=AC.求证:BD=CD
如图,已知AB=AD,CB=CD.求证:AC垂直平分BD
如图,已知AD=AB,CD=BC,求证:AC垂直平分BD
如图,已知AB⊥BD,AC⊥AB,AB=AC,求证:BD=CD
已知:如图AC∥BD,AE和BE分别平分∠CAB和∠DBA,CD过点E.求证:AB=AC+BD
已知如图,E、F在BD上,且AB=CD,BF=DE,AE=CF,求证:AC与BD互相平分.
已知,如图,E、F在BD上,且AB=CD,BF=DF,AE=CF.求证AC与BD互相平分.
已知,如图,AB平分角CAD,BC⊥AC,BD⊥AD,AB、CD交于点O,求证AB垂直平分CD
如图,AB=AD,CB=CD,求证:AC垂直平分BD
如图,AB=AD,CB=CD.求证 AC垂直平分BD