在四棱锥S-ABCD中,AB垂直AD,AB平行CD,CD=3AB,平面SAD垂直平面ABCD,M是线段AD上一点,AM=AB,DM=DC,SM垂AD1 证明 BM垂直平面SMC2.设三棱锥C-SBM与S-ABCD的体积分别为V1与V 求V1/V的值
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![在四棱锥S-ABCD中,AB垂直AD,AB平行CD,CD=3AB,平面SAD垂直平面ABCD,M是线段AD上一点,AM=AB,DM=DC,SM垂AD1 证明 BM垂直平面SMC2.设三棱锥C-SBM与S-ABCD的体积分别为V1与V 求V1/V的值](/uploads/image/z/13824639-63-9.jpg?t=%E5%9C%A8%E5%9B%9B%E6%A3%B1%E9%94%A5S-ABCD%E4%B8%AD%2CAB%E5%9E%82%E7%9B%B4AD%2CAB%E5%B9%B3%E8%A1%8CCD%2CCD%3D3AB%2C%E5%B9%B3%E9%9D%A2SAD%E5%9E%82%E7%9B%B4%E5%B9%B3%E9%9D%A2ABCD%2CM%E6%98%AF%E7%BA%BF%E6%AE%B5AD%E4%B8%8A%E4%B8%80%E7%82%B9%2CAM%3DAB%2CDM%3DDC%2CSM%E5%9E%82AD1+%E8%AF%81%E6%98%8E+BM%E5%9E%82%E7%9B%B4%E5%B9%B3%E9%9D%A2SMC2.%E8%AE%BE%E4%B8%89%E6%A3%B1%E9%94%A5C-SBM%E4%B8%8ES-ABCD%E7%9A%84%E4%BD%93%E7%A7%AF%E5%88%86%E5%88%AB%E4%B8%BAV1%E4%B8%8EV+%E6%B1%82V1%2FV%E7%9A%84%E5%80%BC)
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