名校
解题方法
1 . 已知正四棱锥的侧棱长为
,其各顶点都在同一个球面上,若该球的体积为
,则该正四棱锥的侧棱与底面所成的角的正弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16768ba0c15a45c0652cc3546a111802.png)
您最近一年使用:0次
2 . 如图,在平行六面体
中,
平面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/e0bb10cc-07f5-4c60-95df-48e535cec68f.png?resizew=171)
(1)求证:
;
(2)线段
上是否存在点
,使得平面
与平面
的夹角为
?若存在,求
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddbb0422a136f45653c8c369f2d75fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4615b646e7f1d30265d3fdd4f8439fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f02723217767fbe9da511292d1be7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83472c2139c75eea390cfc0e1104e296.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/e0bb10cc-07f5-4c60-95df-48e535cec68f.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeb1554fc1cec56b983a08e9dc52c85.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
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解题方法
3 . 已知正方体
的棱长为2,E,F分别是棱
,
的中点,P为底面ABCD内(包括边界)一动点,则下列结论正确的是( )
![](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)
A.若直线![]() ![]() ![]() |
B.若![]() ![]() |
C.过E,F,C的平面截该正方体所得截面为五边形 |
D.若点P在棱BC上(不含端点),则过E,F,P的平面截该正方体所得截面为六边形 |
您最近一年使用:0次
4 . 如图,四棱锥
中,底面
为正方形,
平面
,点
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/c37383f1-7423-4c39-8b4b-ca5b300aabbe.png?resizew=166)
(1)求证:
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b55fce0a4716058fe0ad64b01eccc66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3a25299c121dbb883fd3c7918d566d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/c37383f1-7423-4c39-8b4b-ca5b300aabbe.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc6269077b8e6b063efb583c91a564d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05479863cf9f41e2ad9f843ea740a3c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
您最近一年使用:0次
名校
5 . 已知不重合的直线
和平面
,则下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b30b3a9e58846c80f3750b4bacd35ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
2024-02-23更新
|
413次组卷
|
5卷引用:福建省福州第三中学2023-2024学年高二上学期1月期末数学试题
福建省福州第三中学2023-2024学年高二上学期1月期末数学试题(已下线)8.6.1直线与平面垂直(已下线)专题13.4空间直线与平面的位置关系--重难点突破及混淆易错规避(苏教版2019必修第二册)广州市南武中学2023-2024学年高一下学期综合训练(二)段考考试数学试题(已下线)核心考点8 立体几何中综合问题 A基础卷 (高一期末考试必考的10大核心考点)
6 . 在四棱锥
中,底面
是边长为
的正方形,顶点
在底面内的射影
在正方形
的内部(不在边上),且
,
为常数,设侧面
与底面
所成的二面角依次为
,则下列各式为常数的是( )
①
②
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8ce39f25b73f8b2e33e5977881f4b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c108b335ca10bd2a6fd7d90e7287f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2338b97ef987779263cba61ceb790082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bdeb716a658088cb15f94d07d73409.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbeee7959e179725a9b251bb269da6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4886dc9ec29d6e974cbbb56689eef40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a702c8b3689f20c9d43641afdf0e4b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8ce39f25b73f8b2e33e5977881f4b4.png)
A.①② | B.②④ | C.②③ | D.③④ |
您最近一年使用:0次
名校
7 . 在长方体
中(如图),
,点
是棱
的中点.
是否为鳖臑?并说明理由;
(2)求直线
与直线
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed1da7a28fb1983af25f2be2ed03cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7b9894ec3bf6f6ba74bb70d3100ad9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554b3b4c5ce7aca81becc07ed4903736.png)
您最近一年使用:0次
2024-02-23更新
|
215次组卷
|
4卷引用:上海市华东师范大学第二附属中学2023-2024学年高二上学期期末考试数学试卷
上海市华东师范大学第二附属中学2023-2024学年高二上学期期末考试数学试卷上海市嘉定区第二中学2023-2024学年高二下学期3月月考数学试题上海市华东师范大学第三附属中学2023-2024学年高二下学期期中考试数学试题(已下线)专题07 空间向量与立体几何(九大题型+优选提升题)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(沪教版2020选择性必修,上海专用)
名校
8 . 若
,且
,
__
(填一符号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d76573fd13bc7a233d20f20aa1a4e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
解题方法
9 . 如图,在矩形ABCD中,已知
,M,E分别为AB,CD的中点,AC,BE交于点F,DM与AE交于点N,将
沿着AE向上翻折使D到
(点
不在平面ABCD内).
(1)证明:平面
平面ABCD;
(2)若点
在平面ABCD上的投影H落在梯形 ABCE的内部及边界上,当FH最大时,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc28e69c1ba0aac981256887f7dfa94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/c049095a-e4bc-4e90-a13c-39fb51cf5984.png?resizew=174)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c43edf4e8dd8b1dd95375707d66137b0.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805633a7b67a429b775e45e320fe7f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d351375de26204dc4fa14aed92863f.png)
您最近一年使用:0次
解题方法
10 . 如图,在棱长为2的正方体
中,
分别为
,
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/b7475a0e-f19a-4ad2-9f26-74ff652978af.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/b7475a0e-f19a-4ad2-9f26-74ff652978af.png?resizew=170)
A.![]() |
B.![]() ![]() |
C.异面直线![]() ![]() ![]() |
D.平面![]() ![]() ![]() |
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