如图,AD∥BC,AE∥CD,BD平分∠ABC,求证:AB=CE.
如图,梯形ABCD中,AD‖BC,AE‖CD,BD平分∠ABC,求证AB=CE
已知如图:AD∥BC.E是CD的中点.AE平分∠DAB.BE平分∠ABC.求证:AD+BC=AB.
如图,AB∥CD,E为AD上一点,且BE、CE分别平分∠ABC、∠BCD,求证:AE=ED.
已知:如图,BD平分∠ABC,AE垂直平分BD,CD⊥BD 求证:1.AD‖BC 2.AD=1/2BC
已知,如图,AB∥CD,AE平分∠BAC,CE平分∠ACD,求证:AE⊥CE.
如图,AB∥CD,AE平分∠BAD,CD与AE相交于F,∠CFE=∠E.求证:AD∥BC.
23.如图,CD为Rt△ABC斜边AB上的高,AE平分∠BAC交CD于E,EF∥AB交BC于点F,求证:CE=BF.
如图,AB//CD,BE平分∠ABC,交AD于点E,若AB+CD=BC.一求证:CE平分∠BCD.
如图,AB‖CD,BE平分∠ABC,点E为AD中点,且BC=AB+CD,求证:CE平分∠BCD.
如图,AB=AC,AD=AE,BD、CE交于O,求证:AO平分∠BAC.
如图,e为ad中点,be平分角abc,ce平分角bcd,求证ab+cd=bc
如图,已知AD//BC,AE平分∠DAB,EB平分∠ABC,E点在CD上.求证:AB=AD+BC