名校
1 . 如图,棱柱
中,底面
是平行四边形,侧棱
底面
,过
的截面与侧面
交于
,且点
在棱
上,点
在棱
上,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9e7024f4ec4794bc9b3dfbe89b5b9c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/25eaa395-8d84-47ce-8693-4f47455e242b.png?resizew=169)
(1)求证:
;
(2)若
为
的中点,
与平面
所成的角为
,求侧棱
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808709d61dda984c341792168f67104f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9e7024f4ec4794bc9b3dfbe89b5b9c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/25eaa395-8d84-47ce-8693-4f47455e242b.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e632783fe1f09e4200cd52aab1736d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808709d61dda984c341792168f67104f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
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2022-10-06更新
|
354次组卷
|
4卷引用:河南省顶级名校2022-2023学年高三上学期第一次月考试卷数学(文)试题
名校
解题方法
2 . 如图,已知圆锥的顶点为
,点
是圆
上一点,
,点
是劣弧
上的一点,平面
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/f8681f44-3ec5-4472-84b6-d054464efa13.png?resizew=255)
(1)证明:
.
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8dd0f8380d275cf856e678060f5c851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c762937111e04018cad6b507a7dedc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baceb049bf16ed0fd33639fdda0ec5ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef59919f69b93d9511001f32c5eaa64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/f8681f44-3ec5-4472-84b6-d054464efa13.png?resizew=255)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49bdf1dcfe6c344dd2442669e72c44b.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2022-09-23更新
|
1029次组卷
|
6卷引用:河南省创新联盟2022-2023学年高二上学期第一次联考数学试卷(A卷)
河南省创新联盟2022-2023学年高二上学期第一次联考数学试卷(A卷)(已下线)第04讲 空间向量在立体几何中的应用(练,理科专用)湖北省武汉市第十九中学2022-2023学年高二上学期10月月考数学试题湖北省武汉市第三中学2022-2023学年高二上学期10月月考数学试题(已下线)第07讲 向量法求距离、探索性及折叠问题 (高频考点—精讲)河北省邢台市2022-2023学年高二上学期第一次月考数学试题
名校
解题方法
3 . 如图,在正四棱柱
中,
是棱
的中点,点
在棱
上,且
.若过点
的平面与直线
交于点
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/e5967983-7e20-4263-ac37-1257a1c66fd6.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f618a2175373df50d1ae940c4b4ea5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d5fda1d140c9312dcecfd1c8f2860d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8e45b50c77bf6a2cde628ea3455ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d80f818ec04fac85f28df16a1699846.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/e5967983-7e20-4263-ac37-1257a1c66fd6.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-09-23更新
|
644次组卷
|
6卷引用:河南省创新联盟2022-2023学年高二上学期第一次联考数学试卷(A卷)
名校
解题方法
4 . 如图,在三棱锥A﹣BCD中,E为CD的中点,O为BD上一点,且BC
平面AOE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/eead599c-c0fb-49a5-a92d-e948097b2729.png?resizew=190)
(1)求证:O是BD的中点;
(2)若AB=AD,BC
BD,求证:平面ABD
平面AOE.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/eead599c-c0fb-49a5-a92d-e948097b2729.png?resizew=190)
(1)求证:O是BD的中点;
(2)若AB=AD,BC
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
您最近一年使用:0次
2022-09-19更新
|
730次组卷
|
6卷引用:河南省濮阳市2019-2020学年高一下学期升级考试(期末)数学(理)试题
解题方法
5 . 如图,在正方体
中,
,E,F分别是AB,BC的中点,平面
分别与
,
交于M,N两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/51520c10-5553-46e7-afc0-b051473993d8.png?resizew=196)
(1)证明:
.
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239198e40085b7dcffbe747c9c265a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/51520c10-5553-46e7-afc0-b051473993d8.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f792b750e5a53cd089885ebe02c470b.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e5864a623b5b144c7faa22ebd54318.png)
您最近一年使用:0次
6 . 如图,已知圆锥的顶点为P,底面圆
的直径AB长为4,点C是圆上一点,
,点D是劣弧
上的一点,平面
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/d2732e5a-b0a6-4afa-8de8-fa4e48bb1e41.png?resizew=163)
(1)证明:平面
平面POD.
(2)当三棱锥
的体积为
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfb836792b1eebfbd08a6f46fae580e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c762937111e04018cad6b507a7dedc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baceb049bf16ed0fd33639fdda0ec5ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c29f3123f57b56444be9bc048eacc82.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/d2732e5a-b0a6-4afa-8de8-fa4e48bb1e41.png?resizew=163)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7392e9e2da5a0e9ecab0f79992656328.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b2a4541d85e8710408c45c99950b6af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0297943fae12e34fab38c541002b15.png)
您最近一年使用:0次
2022-09-19更新
|
421次组卷
|
2卷引用:河南省创新联盟2022-2023学年高二上学期第一次联考(B卷)数学试题
名校
7 . 如图,AB 是圆O的直径,点C是圆O上异于A,B的点,直线PC⊥平面ABC,E,F分别是PA,PC的中点.
![](https://img.xkw.com/dksih/QBM/2022/8/24/3051571265699840/3053387929706496/STEM/b65bfdea7b034667b9a46ccdf6098ea0.png?resizew=207)
(1)记平面BEF与平面ABC的交线为l,求证:直线l//平面PAC;
(2)若PC=AB=2,点C是
的中点,求二面角E-l-C的正弦值.
![](https://img.xkw.com/dksih/QBM/2022/8/24/3051571265699840/3053387929706496/STEM/b65bfdea7b034667b9a46ccdf6098ea0.png?resizew=207)
(1)记平面BEF与平面ABC的交线为l,求证:直线l//平面PAC;
(2)若PC=AB=2,点C是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
您最近一年使用:0次
2022-08-27更新
|
439次组卷
|
2卷引用:河南省信阳高级中学2022-2023学年高三上学期开学考试数学(理)试题
名校
8 . 若m,n是两条不同直线,
是两个不同平面,则下列命题不正确的是( )
![](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
2022-08-23更新
|
720次组卷
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11卷引用:河南省郑州市第九中学2022-2023学年高二上学期8月月考数学试题
河南省郑州市第九中学2022-2023学年高二上学期8月月考数学试题河南省鹤壁市浚县第一中学2022-2023学年高二上学期11月考试数学试题黑龙江省大庆市2019-2020学年高三上学期第一次教学质量检测数学(文)试题黑龙江省大庆市2019-2020学年高三第一次教学质量检测数学(理)试题江西省上饶中学2019-2020学年高一上学期第二次月考数学(零班、奥赛班)试题江西省上饶中学2019-2020学年高一上学期12月月考数学(筑梦班)试题福建省永安市第一中学2020-2021学年高二上学期期中考试数学试题黑龙江省哈尔滨德强学校2022-2023学年高二(宏志班)上学期期中考试数学试题(B卷)黑龙江省哈尔滨德强学校2022-2023学年高二(清北AB班)上学期期中考试数学试题(A卷)湖北省武汉市七校2022-2023学年高二上学期期中联考数学试题河北省衡水市阳光中学2022-2023学年高二上学期开学考试数学试题
名校
9 . 在三棱柱
中,四边形
是菱形,
,平面
平面ABC,平面
与平面
的交线为l.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/17119dfd-c3bf-41ad-8cc5-18d87de6aa63.png?resizew=202)
(1)证明:
﹔
(2)已知
,l上是否存在点P,使
与平面ABP所成角的余弦值为
?若存在,求
的长度:若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce04b35c265cc9c48b60204bd2f718ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/17119dfd-c3bf-41ad-8cc5-18d87de6aa63.png?resizew=202)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f35646cb29fafd1e1a214b69e4f22d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51913425df93ca50e6e344496b57eaab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924d32b574fe69e43724304cf39513e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655c413f509068d30b165f9d92bdba0.png)
您最近一年使用:0次
10 . 如图,所有棱长均相等的正三棱柱
中,E,F分别是棱BC,
上的点,记EF与
所成的角为
,EF与平面ABC所成的角为
,二面角
的平面角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/7e31e505-a44d-4c3b-ad26-1e1b6146f2c7.png?resizew=186)
(1)当
时,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
,试确定点F的位置;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b6797e834bb430abf574c2f2b3c107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8d4017e1a37acb0c8e00508be472b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/7e31e505-a44d-4c3b-ad26-1e1b6146f2c7.png?resizew=186)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104cacf19f1897c6c86d24c5fe8cb991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e13f82da9187b78bf5aa6839f105da1.png)
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