名校
1 . 如图,在棱长为2的正方体
中,M,N分别是线段
,
的中点,
是线段
上的动点,过M,N,E的平面
截正方体
所得的截面面积记为
.当
为线段
的中点时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
______ ;当
在线段
(包括端点)上运动时,
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/09e0b5e9-06dc-4ed3-9ff9-c44fbed5e242.png?resizew=151)
您最近一年使用:0次
2022-12-25更新
|
733次组卷
|
3卷引用:北京市八一学校2023届高三上学期12月月考数学试题
解题方法
2 . 如图,在边长为2的正方体
中,E,F,O分别为正方形
,
,ABCD的中心,点P在正方形ABCD内(含边界)运动,若直线
与平面DEF无交点,则点P所形成的轨迹___ 点O(填“经过”或“不经过”);该轨迹长度为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655c413f509068d30b165f9d92bdba0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/cc2b6ba7-b76d-4874-9f55-349f8d5a03ff.png?resizew=212)
您最近一年使用:0次
解题方法
3 . 已知正方体
的棱长为1,P是线段
上一点,则三棱锥
的体积为________ ,
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870e337da9544c85a5df7de34abcb686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86309337101620bdb1aa3ad39aeece5c.png)
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解题方法
4 . 如图,在棱长为2的正方体
中,点E,F,G分别是棱BC,
,
的中点,点P为底面
上任意一点.若P与
重合,则三棱锥E-PFG的体积是____ ;若直线BP与平面EFG无公共点,则BP的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/b675836d-e38d-4bc1-bf33-de54fa375965.png?resizew=172)
您最近一年使用:0次
2022-04-20更新
|
1009次组卷
|
3卷引用:北京市通州区2022届高三高考一模数学试题
解题方法
5 . 如图,四棱锥
的底面是平行四边形,
分别是
的中点,平面
平面
平面
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
_______ ,
与
相交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d151cd24c2f9c320eb54e69d71e5cb46.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c47bb2a6411a97d27e5e60687eebfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b13c851652d412e009d28bdd89ce755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79b7465a183039c81bfe12af5728b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ad891a4be78f61ec4ce2807074cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa055e31d93a881ba63cb8e8b28dd4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d151cd24c2f9c320eb54e69d71e5cb46.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在直三棱柱
中,点
为棱
上的点.且
平面
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21f1d9dd461abd86666a1bcaa6140a3.png)
________ .已知
,
,以
为球心,以
为半径的球面与侧面
的交线长度为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd597851c0db4e4de4769e10e09383b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21f1d9dd461abd86666a1bcaa6140a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c330e73dbbf9e2c0f2fb755461e3c898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/16/807cd38a-1133-40a9-aed3-e6791082482c.png?resizew=151)
您最近一年使用:0次
2020-12-03更新
|
1545次组卷
|
9卷引用:第10练 空间点、直线、平面的位置关系-2022年【暑假分层作业】高一数学(人教A版2019必修第二册)
(已下线)第10练 空间点、直线、平面的位置关系-2022年【暑假分层作业】高一数学(人教A版2019必修第二册)湖南省长沙市长郡中学2021-2022学年高一下学期期末数学试题江苏省南京市第二十九中学2022-2023学年高二上学期10月月考数学试题山东省潍坊市寿光现代中学2022-2023学年高二上学期11月综合二数学试题山东省潍坊市2020-2021学年第一学期高二期中考试数学试题(已下线)8.4 空间直线、平面的平行--2020--2021高中数学新教材配套提升训练(人教A版必修第二册)(已下线)专练30 期中综合检测卷(B卷)-2021-2022学年高二数学上册同步课后专练(人版A版选择性必修第一册)山西省平遥中学校2021-2022学年高二上学期期中数学试题黑龙江省佳木斯市富锦市第一中学2022-2023学年高一下学期期末数学试题
2011·北京东城·一模
解题方法
7 . 如图,在正方体
中,E,F,G,H,M分别是棱
,
,
的中点,点N在四边形EFGH的四边及其内部运动,则当N只需满足条件________ 时,就有
;当N只需满足条件________ 时,就有MN∥平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9812da7973be4ef5b33326ebc87bceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f43488162b69d750f069b89a8b2d80f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4508dc6d9c91157836be679c0543cac.png)
![](https://img.xkw.com/dksih/QBM/2011/4/2/1570101236088832/1570101241184256/STEM/cee4b48e-9b86-488e-99a9-a0be7077aed7.png?resizew=191)
您最近一年使用:0次