空间几何问题 (18 18:29:26)在长方体ABCD-A1B1C1D1中,已知E是DD1上一点,是确定点E的位置,是的A1,C1,E三点所确定的平面与长方体的对角线B1D平行
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![空间几何问题 (18 18:29:26)在长方体ABCD-A1B1C1D1中,已知E是DD1上一点,是确定点E的位置,是的A1,C1,E三点所确定的平面与长方体的对角线B1D平行](/uploads/image/z/4105490-50-0.jpg?t=%E7%A9%BA%E9%97%B4%E5%87%A0%E4%BD%95%E9%97%AE%E9%A2%98+%2818+18%3A29%3A26%29%E5%9C%A8%E9%95%BF%E6%96%B9%E4%BD%93ABCD-A1B1C1D1%E4%B8%AD%2C%E5%B7%B2%E7%9F%A5E%E6%98%AFDD1%E4%B8%8A%E4%B8%80%E7%82%B9%2C%E6%98%AF%E7%A1%AE%E5%AE%9A%E7%82%B9E%E7%9A%84%E4%BD%8D%E7%BD%AE%2C%E6%98%AF%E7%9A%84A1%2CC1%2CE%E4%B8%89%E7%82%B9%E6%89%80%E7%A1%AE%E5%AE%9A%E7%9A%84%E5%B9%B3%E9%9D%A2%E4%B8%8E%E9%95%BF%E6%96%B9%E4%BD%93%E7%9A%84%E5%AF%B9%E8%A7%92%E7%BA%BFB1D%E5%B9%B3%E8%A1%8C)
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