已知：如图AE∥BC,AD,BD分别平分角EAB,角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AE平行BC,AD、BD平分EAB、CBA,EC过D,求证AB=AE+BC 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,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 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：如图AD//BC,AE和BE分别平分∠DAB和∠CBA,CD过点E.求证：AB=AD+BC 已知,如图ad平行bc,ae、be分别平分角dab、角abc,cd通过ae,求证ad+bc=ab 已知:如图,AD/AB=AE/BC求证：AD/AE=DB/EC和AB/DB=AC/EC