如图,已知AD//BC,AE平分∠DAB,EB平分∠ABC,E在CD上,求证:AB=AD+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 如图,已知AD//BC,AE平分∠DAB,EB平分∠ABC,E在CD上,求证:AB=AD+BC 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,四边形ABCD中,AD∥BC,点E在边CD上,AE平分∠DAB,BE平分∠ABC,试说明：AD+BC=AB 1,有一四边形左边DA//右边CB.AE平分角DAB.EB平分角ABC.点E在上边CD上.求证:AB=AD加BC. 四边形ABCD中,AD//BC,点E在CD上,AE和BE分别平分∠DAB和∠ABC.求证：AB=AD+BC 如图,AD//BC,AE,BE分别平分∠DAB,∠ABC,CD过点E,求证:AB=AD+BC. 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 如图,已知AB//CD,AD//BC,AE平分∠DAB,且AE//CF,求证CF平分∠BCD 如图,AD‖BC,EA,EB分别平分∠DAB,∠CBA,CD过点E,求证AB=AD+BC 如图，AD∥BC，EA，EB分别平分∠DAB，∠CBA，CD过点E，求证：AB=AD+BC． 如图已知AB//CD,AD//BC,AE平分∠DAB,CF平分∠BCD