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,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 如图已知AD,BD分别平分∠EAB和∠CBA,EC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 已知：如图AE∥BC,AD,BD分别平分角EAB,角CBA,EC过D.求证：AB=AE+BC 在梯形ABCD中,AD//BC,DC垂直AD,AE平分角BAD交CD于点E,且DE=EC.求证:AB=AD+BC 已知:如图在平行四边形ABCD中,AE平分∠BAD交EC于E,DF垂直BC,交AE于G,且DF=AD 求证：CD=DG+ 在Rt三角形ABC中,∠C=90°,AC=BC=AD,DE垂直AB,DE交BC于点E,求证:BD=EC 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 如图,已知AB=AC,DB=DC,AD的延长线交BC于E.求证：（1）BE=EC;(2)AE垂直BC. 已知AE平行BC,AD、BD平分EAB、CBA,EC过D,求证AB=AE+BC AE平分∠BAC,EB垂直AB于B,EC垂直AC于C,D是AE上一点.求证：BD=CD