急 已知AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证1)△BAD≌△CAE 2)BD⊥CE
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如图所示,已知AB⊥AC,AD⊥AE,AB=AC,AD=AE,求证:BE=DC非常急
已知,如图,AB⊥AC,AB=AC,AD⊥'AE,AD=AE,求证:(1)BE=CD;(2)BC⊥CD急!帮个忙呗!
急 已知AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证1)△BAD≌△CAE 2)BD⊥CE
如图,已知:AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证:ED⊥BC.
如图所示,已知AB⊥AC,AD⊥AE,AB=AC,AD=AE,求证:BE=DC
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如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE,已知△DAC≌△EAB.求证BE⊥CD
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已知AD是△ABC的中线AE⊥AB,AF⊥AC且AE=AB,AF=AC连接EF求证AD=1/2EF
已知AD是△ABC的中线AE⊥AB,AF⊥AC且AE=AB,AF=AC连接EF求证AD=1/2EF
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