在正方体ABCD-A1B1C1D1中,M为DD1的中点,O为AC的中点,AB=2.(1)求证:BD1‖平面ACM;?(2)求在正方体ABCD-A1B1C1D1中,M为DD1的中点,O为AC的中点,AB=2.(1)求三棱锥O-AB1M的体积.只要求三棱锥O-AB1M的体积就
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 11:37:05
![在正方体ABCD-A1B1C1D1中,M为DD1的中点,O为AC的中点,AB=2.(1)求证:BD1‖平面ACM;?(2)求在正方体ABCD-A1B1C1D1中,M为DD1的中点,O为AC的中点,AB=2.(1)求三棱锥O-AB1M的体积.只要求三棱锥O-AB1M的体积就](/uploads/image/z/5552856-0-6.jpg?t=%E5%9C%A8%E6%AD%A3%E6%96%B9%E4%BD%93ABCD-A1B1C1D1%E4%B8%AD%2CM%E4%B8%BADD1%E7%9A%84%E4%B8%AD%E7%82%B9%2CO%E4%B8%BAAC%E7%9A%84%E4%B8%AD%E7%82%B9%2CAB%3D2.%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9ABD1%E2%80%96%E5%B9%B3%E9%9D%A2ACM%EF%BC%9B%3F%EF%BC%882%EF%BC%89%E6%B1%82%E5%9C%A8%E6%AD%A3%E6%96%B9%E4%BD%93ABCD-A1B1C1D1%E4%B8%AD%2CM%E4%B8%BADD1%E7%9A%84%E4%B8%AD%E7%82%B9%2CO%E4%B8%BAAC%E7%9A%84%E4%B8%AD%E7%82%B9%2CAB%3D2.%EF%BC%881%EF%BC%89%E6%B1%82%E4%B8%89%E6%A3%B1%E9%94%A5O-AB1M%E7%9A%84%E4%BD%93%E7%A7%AF.%E5%8F%AA%E8%A6%81%E6%B1%82%E4%B8%89%E6%A3%B1%E9%94%A5O-AB1M%E7%9A%84%E4%BD%93%E7%A7%AF%E5%B0%B1)
x]OPǿJCbs;ۺUӳ^xӜ/1oL1
PqDF2Eo7.nW|STb01z7[?MǫڊtsI"(Ll-gs4x,o0= :wZUӚrNkh{l5t<7Nk`[9SJ;_Aky/2}y1He.+k ByP~ntaXʞ+}tRRrV()JA.őёK+rvrX#!ՌG"p:(E]U\HVUZ4̂ivB,
'rvR$eX>ƴD%Ըf2he5lPq.KPHX咅dN6T(GȎD#Y@.|<ϿE9b闱q`TzP!0 k}FL'a켼m}f[(cI` 3ﵩVwnjoɂ~ioWnwH+XylJQh