如图(我自己画的),在底面是菱形的四棱柱ABCD-A1B1C1D1中,角ABC等于60度,AA1=AC=2,A1B=A1D=2倍根号2,点E在A1D上.(1)证明AA1垂直于平面ABCD(这道题不用答,我要问的是第(2)题)(2)当A1E比ED为何
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![如图(我自己画的),在底面是菱形的四棱柱ABCD-A1B1C1D1中,角ABC等于60度,AA1=AC=2,A1B=A1D=2倍根号2,点E在A1D上.(1)证明AA1垂直于平面ABCD(这道题不用答,我要问的是第(2)题)(2)当A1E比ED为何](/uploads/image/z/5164192-64-2.jpg?t=%E5%A6%82%E5%9B%BE%EF%BC%88%E6%88%91%E8%87%AA%E5%B7%B1%E7%94%BB%E7%9A%84%EF%BC%89%2C%E5%9C%A8%E5%BA%95%E9%9D%A2%E6%98%AF%E8%8F%B1%E5%BD%A2%E7%9A%84%E5%9B%9B%E6%A3%B1%E6%9F%B1ABCD-A1B1C1D1%E4%B8%AD%2C%E8%A7%92ABC%E7%AD%89%E4%BA%8E60%E5%BA%A6%2CAA1%3DAC%3D2%2CA1B%3DA1D%3D2%E5%80%8D%E6%A0%B9%E5%8F%B72%2C%E7%82%B9E%E5%9C%A8A1D%E4%B8%8A.%EF%BC%881%EF%BC%89%E8%AF%81%E6%98%8EAA1%E5%9E%82%E7%9B%B4%E4%BA%8E%E5%B9%B3%E9%9D%A2ABCD%EF%BC%88%E8%BF%99%E9%81%93%E9%A2%98%E4%B8%8D%E7%94%A8%E7%AD%94%2C%E6%88%91%E8%A6%81%E9%97%AE%E7%9A%84%E6%98%AF%E7%AC%AC%EF%BC%882%EF%BC%89%E9%A2%98%EF%BC%89%EF%BC%882%EF%BC%89%E5%BD%93A1E%E6%AF%94ED%E4%B8%BA%E4%BD%95)
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