已知平面α‖β‖γ,两条直线l,m分别与平面α,β,γ相交于A、B、C与D、E、F,已知AC=15,DE=5,AB:BC=1:3,求AB,BC,EF的长(写详细步骤)
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![已知平面α‖β‖γ,两条直线l,m分别与平面α,β,γ相交于A、B、C与D、E、F,已知AC=15,DE=5,AB:BC=1:3,求AB,BC,EF的长(写详细步骤)](/uploads/image/z/7683736-40-6.jpg?t=%E5%B7%B2%E7%9F%A5%E5%B9%B3%E9%9D%A2%CE%B1%E2%80%96%CE%B2%E2%80%96%CE%B3%2C%E4%B8%A4%E6%9D%A1%E7%9B%B4%E7%BA%BFl%2Cm%E5%88%86%E5%88%AB%E4%B8%8E%E5%B9%B3%E9%9D%A2%CE%B1%2C%CE%B2%2C%CE%B3%E7%9B%B8%E4%BA%A4%E4%BA%8EA%E3%80%81B%E3%80%81C%E4%B8%8ED%E3%80%81E%E3%80%81F%2C%E5%B7%B2%E7%9F%A5AC%3D15%2CDE%3D5%2CAB%3ABC%3D1%3A3%2C%E6%B1%82AB%2CBC%2CEF%E7%9A%84%E9%95%BF%EF%BC%88%E5%86%99%E8%AF%A6%E7%BB%86%E6%AD%A5%E9%AA%A4%EF%BC%89)
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