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∠DOE

DA⊥AB EA ⊥AC AB=AD AC=AE 求证 DC=BE 如图,AB⊥AC,AC⊥DC,AD=AB.试说明AD∥CB. 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∠DOE 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∠DOE 如图,AD⊥AB,EA⊥AC,AB=AD,AC=AE,BE和CD相交于O,求证：OA平分∠DOE这是有关角平分线的,不要用共圆! 如图,DA⊥AB,EA⊥AC,AB⊥AD,AC⊥AE,BE和CD相交于点O.求∠DOE的度数 如图,ad垂直于ab,ea垂直于ac,ab=ad,ac=ae,be和cd相交于o,求证：oa平分角doe. 已知AB=AC,线段EA平分△ABC的外角∠FAC求证EA ⊥AD 如图,AD⊥AE,AB垂直AC,AD=AE,AB=AC,AD⊥AE ,AB=AC,求证：三角形ABD≌三角形ACE 如图,△ABC中,AB=AC,AD⊥BC于D,EG⊥BC于G,EA=2cm,求AF的长 已知:如图AC⊥BD,AB‖CD,AB=CD.求证:AD=AB 如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证BE⊥CD 如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证BE⊥CD 如图,已知：AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证：ED⊥BC. 如图AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证:△DAC≌三角形EAB 如图,DA⊥AB,EA⊥AC,AB=AD,AC=AE,BE和CD相交于O,则DC,与BE的数量关系为——填空题图在这里 凑活这着看 如图,DA⊥AB,EA⊥AC,AB=AD,AC=AE,BE和CD相交于O,求证角ACD等于角E,BE垂直于CD快 要过程 如图,已知AD//BC,AD=BC,AE⊥AD,AF⊥AB,AE=AD,AB=AF.求证：AC=EF.