在直角梯形ABCD中,AB平形CD,AB垂直BC,角A=60度,AB=2CD,E,F分别为AB,AD的中点,连结EF,EC,BF,CF若CD=2,求四边形BCFE的面积,速回
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![在直角梯形ABCD中,AB平形CD,AB垂直BC,角A=60度,AB=2CD,E,F分别为AB,AD的中点,连结EF,EC,BF,CF若CD=2,求四边形BCFE的面积,速回](/uploads/image/z/6964452-36-2.jpg?t=%E5%9C%A8%E7%9B%B4%E8%A7%92%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAB%E5%B9%B3%E5%BD%A2CD%2CAB%E5%9E%82%E7%9B%B4BC%2C%E8%A7%92A%3D60%E5%BA%A6%2CAB%3D2CD%2CE%2CF%E5%88%86%E5%88%AB%E4%B8%BAAB%2CAD%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E8%BF%9E%E7%BB%93EF%2CEC%2CBF%2CCF%E8%8B%A5CD%3D2%2C%E6%B1%82%E5%9B%9B%E8%BE%B9%E5%BD%A2BCFE%E7%9A%84%E9%9D%A2%E7%A7%AF%2C%E9%80%9F%E5%9B%9E)
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