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
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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
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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.