点de在三角形abc的边bc上,ad=ae,ab=ac,证明bd=ec
点de在三角形abc的边bc上,ad=ae,ab=ac,证明bd=ec
点D.E在△ABC的边BC上,AD=AE,BD=EC,求证:AB=AC
三角形abc,d,e为bc上的点,且bd=ec,求证ab+ac大于ad+ae
如图所示已知点D,E在△ABC的边BC上,AB=AC,AD=AE.求证BD=CE.(不能用证明三角形全等证明
已知三角形abc中,de为bc边上的点,且ad=ae,bd=ec求证ab=ac
点D E在三角形ABC的边BC上 AB=AC AD=AE 求证BD=CE
点D,E在三角形ABC的边BC上,AB=AC,AD=AE,求证BD=CE
点D、E在三角形ABC的边BC上,AB=AC,AD=AE,求证,BD=CE
如图所示,在三角形ABC中,AD/BD=AE/EC,求证EC/AC=BD/AB
如图,在△ABC中,AB>AC,D,E分别在AB,AC上,且AD=AE,直线DE与BC的延长线交于点P,求证BD/EC=
已知点D、E在△ABC的边BC上,AD=AE,BD=EC.求证:AB=AC.
1.点D,E在△ABC的边BC上,AD=AE,BD=EC.求证:AB=AC.