如图,在四棱柱ABCD-A'B'C'D'中,底面ABCD为等腰梯形,AB平行CD,AB=4,BC=CD=2,AA'=2,E、E'分别是棱A如图,在四棱柱ABCD-A'B'C'D'中,底面ABCD为等腰梯形,AB平行CD,AB=4,BC=CD=2,AA'=2,E、E'
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![如图,在四棱柱ABCD-A'B'C'D'中,底面ABCD为等腰梯形,AB平行CD,AB=4,BC=CD=2,AA'=2,E、E'分别是棱A如图,在四棱柱ABCD-A'B'C'D'中,底面ABCD为等腰梯形,AB平行CD,AB=4,BC=CD=2,AA'=2,E、E'](/uploads/image/z/9499724-44-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%9B%9B%E6%A3%B1%E6%9F%B1ABCD-A%27B%27C%27D%27%E4%B8%AD%2C%E5%BA%95%E9%9D%A2ABCD%E4%B8%BA%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2%2CAB%E5%B9%B3%E8%A1%8CCD%2CAB%EF%BC%9D4%2CBC%EF%BC%9DCD%EF%BC%9D2%2CAA%27%EF%BC%9D2%2CE%E3%80%81E%27%E5%88%86%E5%88%AB%E6%98%AF%E6%A3%B1A%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%9B%9B%E6%A3%B1%E6%9F%B1ABCD-A%26%2339%3BB%26%2339%3BC%26%2339%3BD%26%2339%3B%E4%B8%AD%2C%E5%BA%95%E9%9D%A2ABCD%E4%B8%BA%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2%2CAB%E5%B9%B3%E8%A1%8CCD%2CAB%EF%BC%9D4%2CBC%EF%BC%9DCD%EF%BC%9D2%2CAA%26%2339%3B%EF%BC%9D2%2CE%E3%80%81E%26%2339%3B)
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