底面为菱形的直棱柱
中,
分别为棱
的中点.
(1)在图中作一个平面
,使得
,且平面
.(不必给出证明过程,只要求作出
与直棱柱
的截面).
(2)若
,求点
到所作截面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06621866bac516b7a69089375cb11230.png)
(1)在图中作一个平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1bc28273109c30ea2a4a48c5dc1d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3bf6999e2896f56b7247e8c0fa4fbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144993920fbaba924abb12a818f37c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2017/3/17/1645676719964160/1646673527111680/STEM/ed43b82534ab4a269d7471144cfc2ec3.png?resizew=192)
2017·贵州贵阳·一模 查看更多[6]
2017届贵州省贵阳市高三2月适应性考试(一)数学文试卷(已下线)专题39 空间几何体综合练习-2021年高考一轮数学单元复习一遍过(新高考地区专用)(已下线)专题39 空间几何体综合练习-2021年高考一轮数学(文)单元复习一遍过(已下线)专题8.1 立体几何初步 章末检测1(易)-【满分计划】2021-2022学年高一数学阶段性复习测试卷(人教A版2019必修第二册)(已下线)第八章 立体几何初步(能力提升)B卷-2021-2022学年高一数学课后培优练(人教A版2019必修第二册)黑龙江省大庆市大庆铁人中学2021-2022学年高一下学期期末数学试题
更新时间:2017-03-18 21:48:46
|
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【推荐1】在长方体
中,
,
,
、
分别是所在棱
、
的中点,点
是棱
上的动点,连接
、
,如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/40d883cf-e55b-419e-8da3-88e940130255.png?resizew=151)
(1)求异面直线
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(2)求以
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、
、
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
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您最近一年使用:0次
解答题-问答题
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(0.65)
【推荐2】已知正三棱柱ABC-A1B1C1的底面边长为3,E,F分别为CC1,BB1上的的点,且EC=3FB=3,点M是线段AC上的动点
(1)试确定点M的位置,使BM//平面AEF,并说明理由
(2)若M为满足(1)中条件的点,求三棱锥M一AEF的体积.
(1)试确定点M的位置,使BM//平面AEF,并说明理由
(2)若M为满足(1)中条件的点,求三棱锥M一AEF的体积.
![](https://img.xkw.com/dksih/QBM/2018/3/25/1909681685643264/1912630328999936/STEM/2283378e5dff49609dd58e7b3bc7824a.png?resizew=149)
您最近一年使用:0次
解答题-证明题
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(0.65)
名校
解题方法
【推荐1】如图,直三棱柱
中,
,
且
,
分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/17bbe2fd-efb1-4a3f-a68e-f39493846ddd.png?resizew=154)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c646c683fbe522edb7ea54fd3ad873d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d56e653a138322672e5c8b5d6db958c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ee0a8c5d84aaf345a334db2baf20fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
您最近一年使用:0次
解答题-证明题
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【推荐2】如图所示,在三棱柱
中,侧棱
底面
,
,
为
的中点,
.
![](https://img.xkw.com/dksih/QBM/2021/6/6/2737032203689984/2737735409319936/STEM/0f533e76ba6745e5bf84e49e19f8668e.png?resizew=162)
(1)求证:
平面
;
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的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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(1)求证:
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【推荐3】如图,已知
平面ABCD,底面ABCD为矩形,
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平面PAD;
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所成角的余弦值.
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(2)求PD与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5757f787d98f9a46777324b69ad672.png)
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