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1 . 空间四边形
中,
,
,
,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a6df89d21d97de4928ee94b2c6af33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d5e22578854c3bbd960b39eb0c64e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926ddd0b69d714c7310cc5bf23d199d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-12-10更新
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1019次组卷
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7卷引用:上海市复旦大学附属中学2023届高三下学期开学考试数学试题
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2 . 如图,在四面体ABCD中,E是BC的中点,设
,
,
,请用
,
,
的线性组合表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd27dd5543eabc922bdbe03eb5bfd496.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f007f43def5012e2247e483737660651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb37a573945149d806ef91436c026e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199f8bdc9cd947dfda712a8d9f92d7ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ccfda9afde4441cfd1d4df5fe9622d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd27dd5543eabc922bdbe03eb5bfd496.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/94bcc132-bd12-4395-9211-18e4ed4d65ca.png?resizew=182)
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2022-11-08更新
|
464次组卷
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7卷引用:上海市控江中学2021-2022学年高二下学期期中数学试题
上海市控江中学2021-2022学年高二下学期期中数学试题(已下线)第07讲 空间向量基本定理 - -【暑假自学课】2022年新高二数学暑假精品课(人教版2019必修第二册+选择性必修第一册)(已下线)第05讲 空间向量基本定理-2022年暑假高一升高二数学衔接知识自学讲义(人教A版2019)天津市翔宇力仁学校2022-2023学年高二上学期教与学反馈(一)数学试题北京市朝阳区华中师范大学第一附属中学朝阳学校2022-2023学年高二上学期期中考试数学试题(已下线)3.2空间向量基本定理(作业)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020选修第一册)新疆维吾尔自治区伊犁哈萨克自治州霍尔果斯市苏港中学2022-2023学年高二上学期期中数学试题
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3 . 设A、B、C、D是空间中不共面的四点,令
,
,
,则
、
、
三个向量( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3474902ef0cb77e34da69540da3eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a27001419fb042cd7ceb45aca1360e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3273a4d77bc0b109160abfaea63031ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8632651e05bbebcc3e7f6fd0a9d27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720da193aaf7aa394aa2778d32b7737e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7047e72075d87238de4ec35b10f69672.png)
A.互不相等 | B.有且仅有两个相等 | C.都相等 | D.以上均有可能 |
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4 . 在平行六面体
中,M为AC与BD的交点,若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5f9be01066599267291ac0789ed388.png)
___________________ .(用
,
,
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d774fce35cb0286450f61c6c3cbf800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e2fa1a9fb5a87e33dafcf43d48daae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5469b836b99e4ccc2ca519bbf5fcf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5f9be01066599267291ac0789ed388.png)
![](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)
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2021-12-04更新
|
386次组卷
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4卷引用:上海市复旦大学附属中学2019-2020学年高二下学期4月月考数学试题
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解题方法
5 . 在平面四边形
中,
、
分
、
所成的比为
,即
,则有:
.
![](https://img.xkw.com/dksih/QBM/2020/3/5/2413171253133312/2413528477220864/STEM/b4b26cb559bc4f43a2db9a0ee584907e.png?resizew=172)
(1)拓展到空间,写出空间四边形
类似的命题,并加以证明;
(2)在长方体
中,
,
,
,
、
分别为
、
的中点,利用上述(1)的结论求线段
的长度;
(3)在所有棱长均为
平行六面体
中,
(
为锐角定值),
、
分
、
所成的比为
,求
的长度.(用
,
,
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fdc83becc28e0f43d71427d9e8775d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370e89e963f026cb0248f4f50e74db0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88727d06d24b1f8dc38e0bed7f84381.png)
![](https://img.xkw.com/dksih/QBM/2020/3/5/2413171253133312/2413528477220864/STEM/6ee9650d01614f699a380843cbfc48f3.png?resizew=148)
![](https://img.xkw.com/dksih/QBM/2020/3/5/2413171253133312/2413528477220864/STEM/ff548b6517ff473aa7c0fe1dae2732cb.png?resizew=183)
![](https://img.xkw.com/dksih/QBM/2020/3/5/2413171253133312/2413528477220864/STEM/b4b26cb559bc4f43a2db9a0ee584907e.png?resizew=172)
(1)拓展到空间,写出空间四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在长方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a88b719166fcc1431f876bc8c5656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab743f2864f34e28ea6a849478a4b2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)在所有棱长均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3562306681ba2bfcbb8fb49af467d0f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f426dc46de5b68c700ea3c431e095901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0417ee2508989ab8fcf9eba67d1ae646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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