如图,矩形ABCD的对角线交于O,OE⊥AC交CB延长线于E,过B作BF⊥BD,使BF=OE,连接OF EF1,求证:四边形OCEF为平行四边形2,若AD=6,AB=12,求BE还有第二问
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![如图,矩形ABCD的对角线交于O,OE⊥AC交CB延长线于E,过B作BF⊥BD,使BF=OE,连接OF EF1,求证:四边形OCEF为平行四边形2,若AD=6,AB=12,求BE还有第二问](/uploads/image/z/9298540-28-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%9F%A9%E5%BD%A2ABCD%E7%9A%84%E5%AF%B9%E8%A7%92%E7%BA%BF%E4%BA%A4%E4%BA%8EO%2COE%E2%8A%A5AC%E4%BA%A4CB%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8EE%2C%E8%BF%87B%E4%BD%9CBF%E2%8A%A5BD%2C%E4%BD%BFBF%3DOE%2C%E8%BF%9E%E6%8E%A5OF+EF1%2C%E6%B1%82%E8%AF%81%EF%BC%9A%E5%9B%9B%E8%BE%B9%E5%BD%A2OCEF%E4%B8%BA%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A22%2C%E8%8B%A5AD%3D6%2CAB%3D12%2C%E6%B1%82BE%E8%BF%98%E6%9C%89%E7%AC%AC%E4%BA%8C%E9%97%AE)
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