解题方法
1 . 如图,在空间四边形
中,
,点
为
的中点,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/39f53e92-5806-4d5c-9a5c-6141e84c9e63.png?resizew=199)
(1)试用向量
表示向量
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4dc95aa3f1f159dbf4c61239a8df7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352afb2166bc2d282d55bd7bba4388e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/39f53e92-5806-4d5c-9a5c-6141e84c9e63.png?resizew=199)
(1)试用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21909dd065ccc349a2cbfd4c3cf4976b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e2a930f49546b9c47e9178af858eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ee6263cda0779f20c3f19d33b7b190.png)
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8卷引用:贵州省贵阳市“三新”改革联盟校2022-2023学年高二上学期月考(六)数学试题
贵州省贵阳市“三新”改革联盟校2022-2023学年高二上学期月考(六)数学试题江苏省淮安市涟水县第一中学2022-2023学年高二下学期第一次月考数学试题(已下线)2.3.1 空间向量的分解与坐标表示(同步练习)-【素养提升—课时练】2022-2023学年高二数学湘教版选择性必修第二册检测(基础篇)(已下线)第08讲 空间向量基本定理7种常见考法归类-【暑假自学课】2023年新高二数学暑假精品课(人教A版2019选择性必修第一册)(已下线)1.1 空间向量及运算(精练)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)(已下线)1.1.2 空间向量的数量积运算(分层作业)(3种题型分类基础练+能力提升综合练)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第一册)(已下线)第02讲 1.1.2空间向量的数量积运算(7类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)江苏省南京市田家炳高级中学2023-2024学年高二下学期期初考试数学试题
名校
2 . 已知三棱锥
的棱
,
,
两两垂直,
,
,
为
的中点,
在棱
上,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
平面
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bae7599ad243c12d94325ad917f0a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
A.![]() | B.![]() ![]() ![]() |
C.三棱锥![]() ![]() | D.点A到平面![]() ![]() |
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6卷引用:河北省2023届高三上学期11月联考数学试题
名校
3 . 如图,正四面体
的棱长为
是
的中点,
,
,设
,则( )
![](https://img.xkw.com/dksih/QBM/2022/11/8/3105402708115456/3106723971727360/STEM/32c7996e4cc042fb9c4838baa4b8ee2a.png?resizew=212)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/917b057d142e0b8421a9cf83ddec7095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83cd188fbe97cbc368e4ee7c7ba704a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b79e7584a43c6819cedda2ca9f29529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae7dc09ab4960c7e8df32c39a573448.png)
![](https://img.xkw.com/dksih/QBM/2022/11/8/3105402708115456/3106723971727360/STEM/32c7996e4cc042fb9c4838baa4b8ee2a.png?resizew=212)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3卷引用:辽宁省营口开发区第一高级中学2022-2023学年高二上学期11月月考数学试题
名校
解题方法
4 . 已知在四面体
中,
分别是
的中点,设
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46c696ff5f123a482bae81cf9a1b570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ba495e8f9fe02229a4248fdbfb4710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232311b4261c36b659555a07bfa00f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926ddd0b69d714c7310cc5bf23d199d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10卷引用:山东省东营市广饶县第一中学2022-2023学年高二上学期10月月考数学试题
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5 . 如图,在四棱锥P-ABCD中,底面ABCD是平行四边形,点E在侧棱PC上,且
,若
,
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/ded4d899-6ae6-4eb4-9205-8583001945e5.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6186fc8a54f772ec0a8122a1a097c6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e984585ddf28c039219afcebf229de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64b61e5a723d742c5c49dc3c34856f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658ff9921ff96972b0fc95360bb0c65b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/ded4d899-6ae6-4eb4-9205-8583001945e5.png?resizew=171)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 在直三棱柱
中,
,
,点
满足
,其中
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b591658d73b4e76b3c4c0d4628ec65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9c602fb8826a172880463438619080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b9911df490516f7ea3fb1a2d7c793a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df93240ddf0133d0f4ebc756fca5aad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5fd7566ba9184824ab57f151f9b8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e284af0efd5a27ffc998428c49add501.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() ![]() | D.当![]() ![]() ![]() ![]() |
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名校
7 . 如图,在棱长都为1的平行六面体
中,
,
,
两两夹角均为
,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fe2d802f2b37e7db198c5a3c1df9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228f4ddbb8959f904d71259be7c6ab36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a5a1abb6d0c0a4829759ca7b8912c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d1308d5db144e31b4d0211c63ef52.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() |
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4卷引用:新疆乌苏市第一中学2022-2023学年高二上学期线上第二次月考数学试题
8 . 如图,已知四棱柱
的底面
为平行四边形,
,
,
,
与平面
交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d75aafc71e0714f2db78702b953368.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ec642018e5dee22d061d144ef86391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a579a428842e3cabadb50abc83c0fa42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a814e22de9c4492b10ff206e47ce8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d75aafc71e0714f2db78702b953368.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/81d9a6c9-cdd0-4971-9484-ba60b53b8a3c.png?resizew=197)
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2卷引用:湖北省潜江市园林高级中学2022-2023学年高二上学期10月月考数学试题
名校
9 . 在棱长为
的正四面体
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/f9f8cf8d-c47a-4f1d-9adf-14cde7525348.png?resizew=144)
(1)设
,
,
用
,
,
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8239f874d377d1d5346acb1d504a73b2.png)
(2)若
,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a839f2b3e0d5cbfecac2eadeaf62bc10.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/f9f8cf8d-c47a-4f1d-9adf-14cde7525348.png?resizew=144)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfca12290a98993f84d7ee4b8caaa9d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eceecd5e7a17a980a8bf516307f6a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c696e98bcf2820d230eef16f280f401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8239f874d377d1d5346acb1d504a73b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c9a53260c336f2920fc8f492aef08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9c2c37482bc81d4597c602861ac46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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|
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8卷引用:湖北省襄阳市部分学校2022-2023学年高二上学期9月联考数学试题
10 . 如图,在正四面体OABC中,E,F,G,H分别是OA,AB,BC,OC的中点.设
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/02791232-a05a-4f00-b1c3-e7cdb8e5d12a.png?resizew=169)
(1)试用
,
,
表示
;
(2)若正四面体OABC的棱长为6,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a9cb32a25c2a8bb99f75633b4cd5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049131856ba841523793ee3d83099014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eca8aa7145b2327dbccba46da05bb86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/02791232-a05a-4f00-b1c3-e7cdb8e5d12a.png?resizew=169)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa18a71378395f3153cf50f04c2e20d.png)
(2)若正四面体OABC的棱长为6,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e271fc705fed1bd4ddb4eac3764e2c1.png)
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|
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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