一道空间几何题正方体ABCD的棱长为1,过点A作平面A1BD的垂线,垂足为点H.则以下命题中,错误的命题是( )A.点H是△A1BD的垂心 B.AH垂直平面CB1D1C.AH的延长线经过点C1 D.直线AH和BB1所成角为4
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![一道空间几何题正方体ABCD的棱长为1,过点A作平面A1BD的垂线,垂足为点H.则以下命题中,错误的命题是( )A.点H是△A1BD的垂心 B.AH垂直平面CB1D1C.AH的延长线经过点C1 D.直线AH和BB1所成角为4](/uploads/image/z/6133168-64-8.jpg?t=%E4%B8%80%E9%81%93%E7%A9%BA%E9%97%B4%E5%87%A0%E4%BD%95%E9%A2%98%E6%AD%A3%E6%96%B9%E4%BD%93ABCD%E7%9A%84%E6%A3%B1%E9%95%BF%E4%B8%BA1%2C%E8%BF%87%E7%82%B9A%E4%BD%9C%E5%B9%B3%E9%9D%A2A1BD%E7%9A%84%E5%9E%82%E7%BA%BF%2C%E5%9E%82%E8%B6%B3%E4%B8%BA%E7%82%B9H%EF%BC%8E%E5%88%99%E4%BB%A5%E4%B8%8B%E5%91%BD%E9%A2%98%E4%B8%AD%2C%E9%94%99%E8%AF%AF%E7%9A%84%E5%91%BD%E9%A2%98%E6%98%AF%EF%BC%88+%EF%BC%89A%EF%BC%8E%E7%82%B9H%E6%98%AF%E2%96%B3A1BD%E7%9A%84%E5%9E%82%E5%BF%83+B%EF%BC%8EAH%E5%9E%82%E7%9B%B4%E5%B9%B3%E9%9D%A2CB1D1C%EF%BC%8EAH%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E7%BB%8F%E8%BF%87%E7%82%B9C1+D%EF%BC%8E%E7%9B%B4%E7%BA%BFAH%E5%92%8CBB1%E6%89%80%E6%88%90%E8%A7%92%E4%B8%BA4)
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