如图,E为平行四边形ABCD的边AD延长线上的一点,且D为AE的黄金分割点(AD>DE),BE交 (补充)DC于点F,已知DF/CF=ED/AD,AB=(根号5)+3,则DF的长为多少?
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![如图,E为平行四边形ABCD的边AD延长线上的一点,且D为AE的黄金分割点(AD>DE),BE交 (补充)DC于点F,已知DF/CF=ED/AD,AB=(根号5)+3,则DF的长为多少?](/uploads/image/z/2739294-54-4.jpg?t=%E5%A6%82%E5%9B%BE%2CE%E4%B8%BA%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E7%9A%84%E8%BE%B9AD%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%E7%9A%84%E4%B8%80%E7%82%B9%2C%E4%B8%94D%E4%B8%BAAE%E7%9A%84%E9%BB%84%E9%87%91%E5%88%86%E5%89%B2%E7%82%B9%EF%BC%88AD%EF%BC%9EDE%EF%BC%89%2CBE%E4%BA%A4+%EF%BC%88%E8%A1%A5%E5%85%85%EF%BC%89DC%E4%BA%8E%E7%82%B9F%2C%E5%B7%B2%E7%9F%A5DF%2FCF%3DED%2FAD%2CAB%3D%28%E6%A0%B9%E5%8F%B75%29%2B3%2C%E5%88%99DF%E7%9A%84%E9%95%BF%E4%B8%BA%E5%A4%9A%E5%B0%91%3F)
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