(1)如图,点E、A、C在一条直线上,AD⊥BC,EG⊥BC,垂足分别为D、G,EG与AB相交于点F,且∠1=∠2,∠BAD与∠CAD相等吗?为什么?(2)如图,AD、CE是△ABC的高,AB=2BC,AD与CE有怎么样的数量关系?为什么?(3)如图,
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![(1)如图,点E、A、C在一条直线上,AD⊥BC,EG⊥BC,垂足分别为D、G,EG与AB相交于点F,且∠1=∠2,∠BAD与∠CAD相等吗?为什么?(2)如图,AD、CE是△ABC的高,AB=2BC,AD与CE有怎么样的数量关系?为什么?(3)如图,](/uploads/image/z/15183485-53-5.jpg?t=%281%29%E5%A6%82%E5%9B%BE%2C%E7%82%B9E%E3%80%81A%E3%80%81C%E5%9C%A8%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%E4%B8%8A%2CAD%E2%8A%A5BC%2CEG%E2%8A%A5BC%2C%E5%9E%82%E8%B6%B3%E5%88%86%E5%88%AB%E4%B8%BAD%E3%80%81G%2CEG%E4%B8%8EAB%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9F%2C%E4%B8%94%E2%88%A01%3D%E2%88%A02%2C%E2%88%A0BAD%E4%B8%8E%E2%88%A0CAD%E7%9B%B8%E7%AD%89%E5%90%97%3F%E4%B8%BA%E4%BB%80%E4%B9%88%3F%EF%BC%882%EF%BC%89%E5%A6%82%E5%9B%BE%2CAD%E3%80%81CE%E6%98%AF%E2%96%B3ABC%E7%9A%84%E9%AB%98%2CAB%3D2BC%2CAD%E4%B8%8ECE%E6%9C%89%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%E6%95%B0%E9%87%8F%E5%85%B3%E7%B3%BB%3F%E4%B8%BA%E4%BB%80%E4%B9%88%3F%EF%BC%883%EF%BC%89%E5%A6%82%E5%9B%BE%2C)
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