如图,已知ad:bd=ae:ec=5:2,求ab:bd,ae:ac的值
如图,已知ad:bd=ae:ec=5:2,求ab:bd,ae:ac的值
如图,已知AD\BD=AE\EC=3\2,试求:(1)AB\BD的值 (2)EC\AC的值
如图,已知AD/BD=AE/EC=2/3,试求:(1)AD/BD(2)EC/AC的值
如图,已知AB=AC,AD=AE,求证:BD=EC.
如图,已知AB/AD=AC/AE=BC/DE,试说明:AB*EC=AC*BD
已知:如图,AB/AD=AC/AE=BC/DE,求证,AB乘EC=AC乘BD
如图,△ABC中,DE//BC,AD/BD=AE/EC,求证EC/AC=BD/AB
如图,△ABC已知AD/DB=AE/EC,(1)AB=12,AE=6,EC=4.求AD的长(2)试说明AD/BD=EC/
如图 已知,ad垂直于bd ae垂直于ec ad=ae ab=ac,bd,ce交于点o(1)bd=ce(2)oe=od(
已知:如图.AB=AC,AE=AD,BD=EC,求证:∠BAE=∠DAC
如图 已知AD/DB=AE/EC=3/2,求AB/DB,EC/AC,AB/AD
如图所示,在三角形ABC中,AD/BD=AE/EC,求证EC/AC=BD/AB