已知在三角形ABC中,∠BAC=90度,AD垂直BC于D,CE平分∠ACB交AD于F,FG//BC交AB于G,AE=2,AB=7,求EG的长.急.
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![已知在三角形ABC中,∠BAC=90度,AD垂直BC于D,CE平分∠ACB交AD于F,FG//BC交AB于G,AE=2,AB=7,求EG的长.急.](/uploads/image/z/4491750-30-0.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2C%E2%88%A0BAC%3D90%E5%BA%A6%2CAD%E5%9E%82%E7%9B%B4BC%E4%BA%8ED%2CCE%E5%B9%B3%E5%88%86%E2%88%A0ACB%E4%BA%A4AD%E4%BA%8EF%2CFG%2F%2FBC%E4%BA%A4AB%E4%BA%8EG%2CAE%3D2%2CAB%3D7%2C%E6%B1%82EG%E7%9A%84%E9%95%BF.%E6%80%A5.)
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