如图 bd是△abc的中线,AF⊥BD,CE⊥BD,交BD的延长线于E.(1)试探索BE,BF和BD三者之间的数量关系,并加以证明.(2)连接AE、CF,求证:AE//CF
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![如图 bd是△abc的中线,AF⊥BD,CE⊥BD,交BD的延长线于E.(1)试探索BE,BF和BD三者之间的数量关系,并加以证明.(2)连接AE、CF,求证:AE//CF](/uploads/image/z/11310571-19-1.jpg?t=%E5%A6%82%E5%9B%BE+bd%E6%98%AF%E2%96%B3abc%E7%9A%84%E4%B8%AD%E7%BA%BF%2CAF%E2%8A%A5BD%2CCE%E2%8A%A5BD%2C%E4%BA%A4BD%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8EE.%281%29%E8%AF%95%E6%8E%A2%E7%B4%A2BE%2CBF%E5%92%8CBD%E4%B8%89%E8%80%85%E4%B9%8B%E9%97%B4%E7%9A%84%E6%95%B0%E9%87%8F%E5%85%B3%E7%B3%BB%2C%E5%B9%B6%E5%8A%A0%E4%BB%A5%E8%AF%81%E6%98%8E.%EF%BC%882%EF%BC%89%E8%BF%9E%E6%8E%A5AE%E3%80%81CF%2C%E6%B1%82%E8%AF%81%EF%BC%9AAE%2F%2FCF)
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