已知AE平行于BC,AD,BD分别平分角EAB,角ABC交EC于点D,EC过点D,求：AB=AE+BC

已知AE平行于BC,AD,BD分别平分角EAB,角ABC交EC于点D,EC过点D,求：AB=AE+BC 已知AE平行于BC,AD,BD分别平分角EAB,角ABC交EC于点D,EC过点D,求:AB=AE+BC 如图已知AD,BD分别平分∠EAB和∠CBA,EC过点D,AB=AE+BC,求证:AE平行BC 如图,AE平行BC,AD,BD平分角EAB,角CBA,EC过点D,求证角EAB等于AB等于AE+BC 已知如图:AE平行BC,AD,BD分别平分角BAE和角ABC,EC过点D. 已知AE平行BC,AD、BD平分EAB、CBA,EC过D,求证AB=AE+BC 已知：如图AE∥BC,AD,BD分别平分角EAB,角CBA,EC过D.求证：AB=AE+BC 如图,AD,BD分别平分∠EAB和∠ABC,AE垂直EC于E,BC垂直EC于C.求证：AB=AE+BC 如图,三角形ABC中,点D、E在BC上,且DE=EC,过D作DF平行AB交AE于点F,DF=AC,请证明：AE平分角BA 如图,已知AD,BD分别平分∠EAB和∠CBA,EB过点D,AB＝AE＋BC.求证：AE平行BC 已知：如图,在△ABC中,AD平分∠BAC,交BC边于点D,点E、F分别在AB、AC边上,AE=AC,EC平分∠DEF, 在△ABC中,AE平分∠BAC,AE平分角BAF,AD交BC于点D.DE平行CA,交AB于点E