如图,在三角形ABC中,角ACB=90度,AC=BC,AE是BC边上的中线,过C作CF垂直AE,垂足为F,过B作BC垂直BC交CF的廷长线于D。(l)求证:AE=CD;(2)若AC=12cm,求BD的长
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![如图,在三角形ABC中,角ACB=90度,AC=BC,AE是BC边上的中线,过C作CF垂直AE,垂足为F,过B作BC垂直BC交CF的廷长线于D。(l)求证:AE=CD;(2)若AC=12cm,求BD的长](/uploads/image/z/5200572-12-2.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2C%E8%A7%92ACB%3D90%E5%BA%A6%2CAC%3DBC%2CAE%E6%98%AFBC%E8%BE%B9%E4%B8%8A%E7%9A%84%E4%B8%AD%E7%BA%BF%2C%E8%BF%87C%E4%BD%9CCF%E5%9E%82%E7%9B%B4AE%2C%E5%9E%82%E8%B6%B3%E4%B8%BAF%2C%E8%BF%87B%E4%BD%9CBC%E5%9E%82%E7%9B%B4BC%E4%BA%A4CF%E7%9A%84%E5%BB%B7%E9%95%BF%E7%BA%BF%E4%BA%8ED%E3%80%82%EF%BC%88l%EF%BC%89%E6%B1%82%E8%AF%81%3AAE%3DCD%EF%BC%9B%EF%BC%882%EF%BC%89%E8%8B%A5AC%3D12cm%EF%BC%8C%E6%B1%82BD%E7%9A%84%E9%95%BF)
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