如图已知ab=ad,ac=ae∠bad=∠eac是说明bc=de
如图已知ab=ad,ac=ae∠bad=∠eac是说明bc=de
如图,在△ABE中,AB=AE,AD=AC,∠BAD=∠EAC,BC,DE交于点O.试说明:BC=ED
如图,已知AB/AD=BC/DE=AE/AC,点B、D、E在同一直线上,试说明∠BAD=∠CBE=∠EAC
如图,在△ABE中,AB=AE,AD=AC,∠BAD=∠EAC,BC、DE交于点O.∠ABC=∠AED;
如图,在△ABE中,AB=AE,AD=AC,∠BAD=∠EAC,BC、DE交于点O.
如图,已知AB=AD,AC=AE,角BAD=角CAE.试说明BC=DE
如图所示,AB=AE,AC=AD,∠BAD=∠EAC,试说明ED=BC
已知在三角形ABC中,DE在BC边上,AB=AC,AD=AE.求证∠BAD=∠EAC.  
如图,AB/AD=BC/DE=AC/AE,求证:∠BAD=∠CAE
已知:如图,AB=AD,AC=AE,∠BAD=∠CAE,求证:BC=DE
已知:如图,AB/AD=BC/DE=AC/AE,求证:∠BAD=∠CAE
已知:AB=AD,AC=AE,BC=DE,∠EAC=30°,求∠DAB的大小