如图,AD=AE,BE=CD,∠1=∠2,求证:AB=AC.

已知如图,AB=AC,∠1=∠2,AD⊥CD,AE⊥BE,求证:AD=AE 如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证BE⊥CD 如图,AB=AC,AD=AE,BE=CD,（1）求证：∠BAC=∠EAD；(2)求证∠BDC=∠EAD 已知:如图,CD,BE是三角形ABC的高.求证:(1).AD:AC=AE:AB (2).角AED 如图,已知AB垂直AC,AD垂直AE,AB=AC,AD=AE,求证BE=CD且BE垂直CD.图在后面. 如图,AD=AE,BE=CD,角1=角2.求证:AB=AC. 如图,AD⊥AB,EA⊥AC,AB=AD,AC=AE,BE和CD相交于O,(1)求∠DOE的度数；（2）求证：OA平分∠ 已知AD⊥AB,AC⊥AE,且AD=AB,AC=AE,CD分别交AB,BE于点G,F 求证1）∠B=∠C 2）BE⊥CD 如图,AB=AC,AD=AE,CD=BE,求证,角DAB=角EAC 已知:如图,AB=AC,AD=AE,BE、CD交于点G.求证:AG平分角BAC 如图,AB=AC,AD=AE,BE与CD相交与点O.求证：AO垂直BC 如图AB=AC AD=AE,BE与CD相交于点o,求证AO⊥BC