名校
1 . 在正方体
中,
与平面
所成角的正切值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
您最近一年使用:0次
名校
2 . 在直角三角形
中,
,
是斜边
的中点,将
沿直线
翻折,若在翻折过程中存在某个位置,使得
,则
边长的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324aae9536a57bcaf320795715f20b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2021-06-02更新
|
852次组卷
|
5卷引用:四川省德阳市2021届高三模数学(理)试题
四川省德阳市2021届高三模数学(理)试题北京市北京理工大学附属中学2021-2022学年高二10月数学月考试题第十一章 立体几何初步单元测试卷(已下线)考向34 空间中的垂直关系(已下线)第33讲 立体几何中的范围与最值问题-2022年新高考数学二轮专题突破精练
3 . 如图,矩形
所在平面与正方形
所在平面互相垂直,
,点
在线段
上.给出下列命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/45e1bd37-d621-4b28-b4f7-2f787e36ae5c.png?resizew=188)
①直线
直线
;
②直线
与平面
所成角的正弦值的取值范围是
;
③存在点
,使得直线
平面
;
④存在点
,使得直线
平面
.
其中所有真命题的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ffb294c579ee62b215164e8899fd4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/45e1bd37-d621-4b28-b4f7-2f787e36ae5c.png?resizew=188)
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7aec9f50619eb57d9a94fe60051cff.png)
③存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
④存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826bf6fa3706921b77ad0eb4fcc206bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
其中所有真命题的序号是
您最近一年使用:0次
2021-05-28更新
|
1067次组卷
|
5卷引用:四川省大数据精准联盟2021届高三第三次统一监测文科数学试题
四川省大数据精准联盟2021届高三第三次统一监测文科数学试题四川省大数据精准联盟2021届高三第三次统一监测理科数学试题(已下线)专题11 点、直线、平面之间的位置关系-备战2022年高考数学学霸纠错(全国通用)(已下线)专题35 立体几何中的探索性问题求解策略-学会解题之高三数学万能解题模板【2022版】(已下线)思想01 运用分类讨论的思想方法解题(5大题型)(练习)
4 . 如图,在棱长为1的正方体
中,点P在线段
上运动,给出以下命题:
①异面直线
与
所成的角不为定值;
②二面角
的大小为定值;
③三棱锥
的体积为定值;
④平面
平面
.
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/83c09eec4e14a861af83d7828797d176.png)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407eeb34204a1df967b8fbe481cb04d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
②二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d286cc307396ae72d71f98503b942f7e.png)
③三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a80afb14665ad9cb3587c5364980e30.png)
④平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9be92a3d03fd57eb64d2a01a60d1d9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4294ffdba16ae69fd03b13959d682aba.png)
其中真命题的序号为
![](https://img.xkw.com/dksih/QBM/2021/5/14/2720987904884736/2723120368992256/STEM/3591d5f4-8f75-4d7e-bfdb-b28b60796792.png?resizew=246)
您最近一年使用:0次
解题方法
5 . 如图,在棱长为1的正方体
中,点P在线段
上运动,给出以下命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/31a7bb5d-27af-44ec-bcad-1c9b0c9d7837.png?resizew=165)
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/83c09eec4e14a861af83d7828797d176.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/31a7bb5d-27af-44ec-bcad-1c9b0c9d7837.png?resizew=165)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407eeb34204a1df967b8fbe481cb04d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
②平面
![](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/6c55e158a95b9fc0fb606742e79cbb65.png)
④三棱锥
![](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
解题方法
6 . 三棱柱
中,侧面与底面垂直,底面是边长为2的正三角形,若直线
与
所成的角为
,则棱柱的高为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
您最近一年使用:0次
解题方法
7 . 三棱柱
中,侧面与底面垂直,底面是边长为2的正三角形,
的中点为D,若直线
与
所成的角为
,则棱柱的高为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
您最近一年使用:0次
8 . 已知三棱柱
,
面
,
为
内的一点(含边界),且
为边长为2的等边三角形,
,
、
分别为
、
的中点,下列命题正确的有______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/b0c95145-f581-4f14-b5ea-0e2d92175657.png?resizew=187)
①若
为
的中点时,则过
、
、
三点的平面截三棱柱表面的图形为等腰梯形;
②若
为
的中点时,三棱锥
的体积
;
③若
为
的中点时,
;
④若
与平面
所成的角与
的二面角相等,则满足条件的
的轨迹是椭圆的一部分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ced1d47b8244d17b506f9b9fff85fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146f8c5491f5c6226f67b20f1e340320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04a2f09a6d56ce328f0fa843ef8fa89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c27eda162792128da25f541303a3088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc8fb75e1e8510448e569d865bd98a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ff9d4fdd0d176042505b7aac016852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e4270e65d0e32556fa14fcd55fa1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcdd8c05cd04f46c6f4ba8aa3cb1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad135b14c9dcd83eab6618d7694c7b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d6b83a5dc6b15f3d5feff1a2d73faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03fcb360984721a5600d426949ccdb14.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/b0c95145-f581-4f14-b5ea-0e2d92175657.png?resizew=187)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c27eda162792128da25f541303a3088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745bb2828e2ef0ae89cf33ae00ceea59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745bb2828e2ef0ae89cf33ae00ceea59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcbe7a5a0f1e0d33eb373c2f56bd4ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd787f68f292ee0f4dae976fcd72ddd6.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745bb2828e2ef0ae89cf33ae00ceea59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10328529578117dfdbb91c96ed2ce40.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2021-05-10更新
|
425次组卷
|
4卷引用:四川省凉山州2021届高三二模数学(文科)试题
解题方法
9 . 在正方体
中,
为棱
的中点,则
与底面
所成角的正弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2021-05-06更新
|
425次组卷
|
2卷引用:四川省资阳市2021届高三高考适应性考试数学(文)试题
名校
解题方法
10 . 如图,在正四棱锥
中,
,
,
分别是
,
,
的中点,动点
在线段
上运动时,下列四个结论:①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4862958e60c245dc9a5d9cb57d31eb4.png)
;②
;③
面
;④
面
中恒成立的为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4862958e60c245dc9a5d9cb57d31eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1aba56e04a373cefa813b31a3d99f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3834a4bb20d2b065695dbf53091b065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5000fea066102e62cf2128ccbbd2b3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4862958e60c245dc9a5d9cb57d31eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
![](https://img.xkw.com/dksih/QBM/2021/3/14/2677868871032832/2685640297308160/STEM/945388bc535740a5a28b5a810acd4e74.png?resizew=174)
您最近一年使用:0次
2021-03-25更新
|
177次组卷
|
2卷引用:四川省乐山沫若中学2020-2021学年高二下学期入学考试数学(文科)试题