已知:如图,AB=BD,AC⊥CD,AB=AC.求证:BD=CD
已知:如图,AB=BD,AC⊥CD,AB=AC.求证:BD=CD
如图,已知AB⊥BD,AC⊥AB,AB=AC,求证:BD=CD
已知AB⊥BD,AC⊥CD,AB=AC,求证BD=CD
如图,已知AB∥CD,AB=CD,求证:AC与BD平分.
已知:如图,AB=AD,CB=CD,AC与BD相交于点O,求证:AC⊥BD
如图:AB⊥BD,ED⊥BD,AB=CD,AC=CE.求证:AC⊥CE.
已知,如图,AD//BC,且BD垂直CD,BD=CD,AC=BC,求证:AB=BO
如图,已知AC,BD交于点O,AB平行CD,OA=OC,求证AB=CD
已知如图,AB=AC,BE=CE.求证BD=CD
已知 如图AB=CD AC=BD,求证∠B=∠C
已知:如图,AB=AC,∠ABD=∠ACD,求证:BD=CD
如图,已知ab=cd,ac=bd,求证:角a=角d