如图所示,在△ABC中,已知AD是BC边上的高,EF‖BC分别交于AB,AC,AD于E,F,G,AG/GD=2/3,求(1)EF/BC的值(2)S△AEF/S△ABC的值
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![如图所示,在△ABC中,已知AD是BC边上的高,EF‖BC分别交于AB,AC,AD于E,F,G,AG/GD=2/3,求(1)EF/BC的值(2)S△AEF/S△ABC的值](/uploads/image/z/11940996-12-6.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E5%B7%B2%E7%9F%A5AD%E6%98%AFBC%E8%BE%B9%E4%B8%8A%E7%9A%84%E9%AB%98%2CEF%E2%80%96BC%E5%88%86%E5%88%AB%E4%BA%A4%E4%BA%8EAB%2CAC%2CAD%E4%BA%8EE%2CF%2CG%2CAG%2FGD%3D2%2F3%2C%E6%B1%82%EF%BC%881%EF%BC%89EF%2FBC%E7%9A%84%E5%80%BC%EF%BC%882%EF%BC%89S%E2%96%B3AEF%2FS%E2%96%B3ABC%E7%9A%84%E5%80%BC)
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