如图,在四边形ABCD中,AD∥BC,∠ABC=∠DCB,AB=DC,AE=DF.(1)求证:BF=CE; (2)当E、F相向运动,形成图(2)时,BF和CE还相等吗?请证明你的结论.
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![如图,在四边形ABCD中,AD∥BC,∠ABC=∠DCB,AB=DC,AE=DF.(1)求证:BF=CE; (2)当E、F相向运动,形成图(2)时,BF和CE还相等吗?请证明你的结论.](/uploads/image/z/902754-18-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2CAD%E2%88%A5BC%2C%E2%88%A0ABC%3D%E2%88%A0DCB%2CAB%3DDC%2CAE%3DDF.%281%29%E6%B1%82%E8%AF%81%EF%BC%9ABF%3DCE%3B+%282%29%E5%BD%93E%E3%80%81F%E7%9B%B8%E5%90%91%E8%BF%90%E5%8A%A8%2C%E5%BD%A2%E6%88%90%E5%9B%BE%EF%BC%882%EF%BC%89%E6%97%B6%2CBF%E5%92%8CCE%E8%BF%98%E7%9B%B8%E7%AD%89%E5%90%97%3F%E8%AF%B7%E8%AF%81%E6%98%8E%E4%BD%A0%E7%9A%84%E7%BB%93%E8%AE%BA.)
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