已知:如图AB=AC,AD=AE.AB,DC相交于点M,AC,BE相交于点N,∠DAB=∠EAC.求证:∠D=∠E

已知:如图AB=AC,AD=AE.AB,DC相交于点M,AC,BE相交于点N,∠DAB=∠EAC.求证:∠D=∠E 15如图,AB=AC,AD=AE.AB、DC相交于M,AC、BE相交于N,∠DAB=∠EAC.求证：AM=AN 如图，AB=AC，AD=AE，AB，DC相交于点M，AC，BE相交于点N，∠DAB=∠EAC．求证：△ADM≌△AEN． 如图6,AB=AC,AD=AE,∠DAB=∠EAC,AB、DC相交于点M,AC、BE相交于点N,BE、CD相交于点O,证 已知如图,AB=AC,AD=AE,AB、DC相交于点M,AC、BE相交于点N,AP⊥DC于P,AQ⊥BE于Q且∠DAB= 如图,已知AB=AC,AD=AE,AB与DC相交于点M,∠DAB=∠EAC,AM=5,求AN的长 真么写已知如图ab=ac ad=ae ab dc相交于点m ac be相交于点n,角bab=角eac 求角am=an 已知:如图AB=AC,AD=AE.AB,DC相交于点M,AC,BE相交于点N, 已知:如图,AD平分∠ABC,BE⊥AC于E,CF⊥AB于F,BE、CF相交于点D,求证:BF=CE 已知,如图,点D,E分别在AB,AC上,AD=AE,BE,CD相交于点O,∠B=∠C.求证：（1）△ABE≌△ACD&n [数学证明题]如图,在四边形ABCD中,对角线AC和BD相交于点E,已知AC平分∠DAB,且AB=AE,AC=AD,求证 如图,在四边形ABCD中,对角线AC和BD相交于点E,已知AC平分角DAB,且AB=AE,AC=AD,求证：BC=DC,