1 . 已知m,n是两条不同直线,α、β是两个不同平面,对下列命题:
①若
,则
;
②若
,
,则
且
;
③若
,
,则
;
④若
,
,
,则
;
⑤若
,
,则
.
其中正确的命题是______________ (填序号).
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc1541a530c510bfa07069029cc48b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3bdd7a1a12d66a8b32e239fd6886a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a4c549e7ea8776ec821c467bc1a913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc01d7aa51bf4f95c4b12ae9dcb7eb4c.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4285fe5b27731c6f503dd4d8fdd70746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a4c549e7ea8776ec821c467bc1a913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d6ca6fed060a95127579051f7a6b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a4c549e7ea8776ec821c467bc1a913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b610e3c5b3d78a5730e7f3d736ac28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
其中正确的命题是
您最近一年使用:0次
2 . 设
、
、
为三个不同的平面,m、n为两条不同的直线,给出下列条件:①
,
;②
,
;③
,
;④
,
,
.其中能使
成立的条件是__________ .(选填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f157205cb5cb4a538b09d989f2d9ae95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35a45cfcdfbda18b089ce6698ccdbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82e5d28e2e5a4790e94db2daa6a07c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808c6d37467a5c995d71e49408503927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4042f9c51f83e3367d496e851735d7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d6ca6fed060a95127579051f7a6b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
您最近一年使用:0次
3 . 如图,在直三棱柱
中,
,
,
,
,
.记
,给出下列四个结论:
①对于任意点H,都不存在点P,使得平面
平面
;
②
的最小值为3;
③当
取最小时,过点A,H,P作三棱柱的截面,则截面面积为
;
④满足
的点P有无数个.
其中所有正确结论的序号是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a42d925639622157cdecb660f1825e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e9a09c909a429631570ccd3e5c74d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/492ea7cdba18ed18720f39d86fc4ed38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ca8fc052439953a9bf7b97a18714ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/22/77a4e537-e1c1-4946-b40c-81dd88ea9281.png?resizew=144)
①对于任意点H,都不存在点P,使得平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df867532932728d76021986a0cd34d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304fa80bd78f6cc529c83d481c0b7ba5.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72df651e67c045ea5d886abef4c2165.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72df651e67c045ea5d886abef4c2165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed24aeda4260685f4e1bd6b78a8ff25.png)
④满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e387e85d1905f82a2a80350790ecb1.png)
其中所有正确结论的序号是
您最近一年使用:0次
2023-11-02更新
|
569次组卷
|
2卷引用:北京一零一中2023-2024学年高二上学期期中考试数学试题
名校
4 . 如图,在棱长为1的正方体
中,点
在线段
上运动,给出以下命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/cd1999e3-8268-4859-94ed-97892aedb07c.png?resizew=180)
①异面直线
与
所成的角不为定值; ②平面
平面
;
③二面角
的大小为定值; ④三棱锥
的体积为定值.
其中真命题的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/cd1999e3-8268-4859-94ed-97892aedb07c.png?resizew=180)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407eeb34204a1df967b8fbe481cb04d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9be92a3d03fd57eb64d2a01a60d1d9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4294ffdba16ae69fd03b13959d682aba.png)
③二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d286cc307396ae72d71f98503b942f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a80afb14665ad9cb3587c5364980e30.png)
其中真命题的序号为
您最近一年使用:0次
5 . 在三棱锥
中,
,
分别为棱
的中点.现有以下4个结论:
①三棱锥
的外接球表面积为
;
②
;
③
平面
;
④当
时,平面
平面
.
则其中正确结论的序号为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e561abd2bb54ac40d4f7af31ff9f7397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96c92bc20565fb976e0c73ee4017261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceeb10380ea1162ae9078c9b93adb846.png)
①三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a39dce3f1e36dbe01293c309816968.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b0e8d6874ca0163575176a49accf45.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d07d16fc91aa960b67ba4b474de8a62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a270ec7e23fc0cc1d4b04bf1d22184.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3755b2bcf7516eedb26a27ad73657216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
则其中正确结论的序号为
您最近一年使用:0次
6 . 金刚石也被称作钻石,是天然存在的最硬的物质,可以用来切割玻璃,也用作钻探机的钻头.金刚石经常呈现如图所示的“正八面体”外形.正八面体由八个全等的等边三角形围成,体现了数学的对称美.下面给出四个结论:
平面
;
②平面
平面
;
③过点
存在唯一一条直线与正八面体的各个面所成角均相等;
④以正八面体每个面的中心为顶点的正方体的棱长是该正八面体棱长的
.
其中所有正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c34b18525831f3eda7bb90be0199b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14eec658f69c267a70c1e8f9b744e282.png)
②平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
③过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
④以正八面体每个面的中心为顶点的正方体的棱长是该正八面体棱长的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d74ef32584586ec4857acd0a3f4fe9.png)
其中所有正确结论的序号是
您最近一年使用:0次
2023-07-11更新
|
576次组卷
|
5卷引用:北京市东城区2022-2023学年高一下学期期末统一检测数学试题
北京市东城区2022-2023学年高一下学期期末统一检测数学试题(已下线)高一下学期期中复习填空题压轴题十七大题型专练(2)-举一反三系列(人教A版2019必修第二册)(已下线)8.6.3平面与平面垂直——课后作业(巩固版)(已下线)专题06 空间中点线面的位置关系6种常考题型归类(2) -期期末真题分类汇编(北京专用)【北京专用】专题15立体几何与空间向量(第四部分)-高一下学期名校期末好题汇编
名校
7 . 设
,
是两条不同的直线,
,
是两个不同的平面.下列正确命题的序号是______ .
①若
,
,
,则
②若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
③若
,
,
,则
④若
,
,
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4ded3c4bc7a2212f2a0eb5f9753de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4ded3c4bc7a2212f2a0eb5f9753de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a93a52c2b943e4c70ace99ed802d2b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c166c4d75211e5294eb440bf2a6350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39344e476725f3fbae35f2e73377a38b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53cd751c44ad4d9ebd8e3243e751321.png)
您最近一年使用:0次
2023-06-14更新
|
664次组卷
|
5卷引用:河北省赵县中学2022-2023学年高一下学期5月月考数学试题
河北省赵县中学2022-2023学年高一下学期5月月考数学试题河北省石家庄市五校联合体2022-2023学年高一下学期期中数学试题(已下线)第03讲 空间中平行、垂直问题10种常见考法归类(3)(已下线)第10章 空间直线与平面(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(沪教版2020必修第三册)(已下线)模块五 高一下期中重组篇(河北)
名校
8 . 如图,在正方体
中,点
为线段
上异于
,
的动点,则下列四个命题:
平面
;
②二面角
的正弦值为
;
③设
,则三棱锥
的体积随着
增大先减少后增大;
④连接
,总有
平面
.其中正确的命题是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df00cdf77ed39ca5a0b305861a693142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
②二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab6ad3d3e3064fa417a02dba02dbf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d794fa98ade13e9a141b45a139844914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8105ba6cfdb119f9227d8a6fe04a4a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
④连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5563473602e1b17d582a165b7b7b6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d28074ee5af1441242700388b3a9c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
您最近一年使用:0次
2023-06-09更新
|
536次组卷
|
2卷引用:北京市朝阳区清华大学附属中学朝阳学校2022-2023学年高一下学期期中考试数学试题
9 . 如图,在棱长为
的正方体
中,点
分别为棱
的中点,点
为侧面
内部(不含边界)一动点,给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/2/112c215f-71eb-4ad4-9329-72bf5594b532.png?resizew=158)
①当点
运动时,平面
截正方体所得的多边形可能为四边形、五边形或六边形;
②当点
运动时,均有平面
平面
;
③当点
为
的中点时,直线
平面
;
④当点
为
的中点时,平面
截正方体的外接球所得截面的面积为
.
其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3dd50ad676db896ea4cc6f4637ce22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/2/112c215f-71eb-4ad4-9329-72bf5594b532.png?resizew=158)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcdb0295b373c6e306ca0dcf86f8b941.png)
②当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d6772f5331cf0cc5302123e4698ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15e58659e6ee4d93650e2edb6d6f7ff.png)
③当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07391ef575d28f09bc5cda0ff8130a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcdb0295b373c6e306ca0dcf86f8b941.png)
④当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcdb0295b373c6e306ca0dcf86f8b941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877c2a74cc56d5936a49fde5159c8703.png)
其中所有正确结论的序号是
您最近一年使用:0次
名校
解题方法
10 . 如图,在棱长为1的正方体中,点P是线段
上一动点(不与
,B重合),则下列命题中:
①平面
平面
;
②
一定是锐角;
③
;
④三棱锥
的体积为定值.
其中真命题的有__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1baaa912fedaaf6670730bfad1de32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf74a5f57a377b91ea36680e2c6b4815.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6913da03b6e87d163d17c1dc34295c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fe8889c7ac022128a40c633282de4b.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894fcea66eb492bec09c11f106b9b4fa.png)
其中真命题的有
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/21/24b3c10a-18cc-45ac-a8c9-fc9c5d43ed0e.png?resizew=152)
您最近一年使用:0次
2023-03-20更新
|
1408次组卷
|
7卷引用:北京市北京师范大学附属实验中学2023届高三数学零模试题