如图：AD,BE相交于点C,AB=AC,EC=ED;M.F.G分别是AE,BC,CD的中点.求证：AE=2MF MF=MG

已知:如图AB=AC,AD=AE.AB,DC相交于点M,AC,BE相交于点N, 如图,AB=AC ,AD=AE ,BE 与CD 相交于点O,求证AO垂直于B C 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,证明：OM=ON. 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,角bab=角eac求角am=an 如图,点D,E分别在线段AB,AC上,BE,CD相交于O.AE=AD,∠B=∠C.求证：BD=CE 如图AB=AC AD=AE,BE与CD相交于点o,求证AO⊥BC 如图,AB=AC,AD=AE,AB,DC相交于点M,AC,BE相交于点N,AD//BE,AE//DC,求证∠DAB=∠EAC 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 .如图,已知BE⊥AC于E,CF⊥AB于F,BE、CF相交于点D,若BD=CD.求证：AD平分∠BAC. 如图,△ABC中,AB=AC,AD⊥BC于点D,BE⊥AC于点E,AD与BE相交于点H,AE=BE,试说明AH＝2BD 如图,点D在AB上,点E在AC上,BE和CD相交于点O,AB=AC,角B=角C,求证AD=AE 如图,已知AB=AC,AB垂直BD,AC垂直CD,AD,BC相交于点E,求证CE=BE. 如图在△ADE中 点B,C在边AD AE上,DC,BE相交于点O,又知AB:AC=AE:AD证明三角形OBC∽△ODE. 如图:AB=AC,AD=AE,AB,DC相交于点M.AC,BE,相交于点N,∠DAC=∠EAB.求证:AM=AN 如图,AB=AC,AD=AE,AB,DC相交于点M,AC,BE相交于点N,角DAB=角EAC.求证：AM=AN 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 如图,AB=AC,AD=AE,AB与CD相交于点M,BE与AC相交于点N,∠DAB=∠EAC.求证：AM=AN 如图,在△ABC中,AB=AC,AD和BE是高,它们相交于H点,且AE=BE.求证：AH=2BD