在三棱柱
中,
分别是
上的点,且
.设
,若
,则下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/76827956-64e4-484b-b980-a235ed0540ad.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2743e10dd8bce468d1d397b3e9a550d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34e64e89969cc8ed3ab95c39adfbdca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a09fe477818584028f82a09f1d19a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/033950d348d11ab3d63f2b467b41c4f1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/76827956-64e4-484b-b980-a235ed0540ad.png?resizew=188)
A.![]() | B.![]() |
C.![]() | D.直线![]() ![]() ![]() |
22-23高二下·江苏南京·期中 查看更多[3]
江苏省南京市溧水高级中学2022-2023学年高二下学期4月学情调研数学试题(1)江苏省南京市中华中学2022-2023学年高二下学期期中数学试题(已下线)第07讲 空间向量的数量积运算9种常见考法归类(2)
更新时间:2023-05-05 16:15:54
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解题方法
【推荐1】已知向量
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f726edf8cca26e1011faa7101c506e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56f7b7331d7bc66debf192e0f041f3a.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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【推荐2】已知圆
的方程为
,点
,点
是
轴上的一个动点,过点
作圆
的两条切线,切点分别为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ecf7a6913d90c2df051d608011cc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c2f1350f314be847bfd1e55c5293ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
A.存在切点![]() ![]() | B.直线![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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【推荐1】如图正方体
中,
为正方形
的中心,
、
分别为
、
的中点,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/3a0a0976-db7c-4757-bbe1-78817ae62086.png?resizew=175)
A.三个向量![]() ![]() ![]() |
B.![]() |
C.![]() |
D.平面![]() ![]() ![]() |
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【推荐2】如图,平面
内的小方格均为边长是1的正方形,
,
均为正方形的顶点,
为平面
外一点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/077008a3-ed7a-477f-9b40-d438ee915cdf.png?resizew=202)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/077008a3-ed7a-477f-9b40-d438ee915cdf.png?resizew=202)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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【推荐1】如图,在平行六面体
中,以顶点
为端点的三条棱长都是2,且它们彼此的夹角都是
为
与
的交点,若
,则下列正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/688cf609-cc9c-449c-90b8-a525314b2a05.png?resizew=213)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814ed45d652c590f5961ee88ed6f5481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfb9769a14ebf5cbc5fa0c06ce96435.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/688cf609-cc9c-449c-90b8-a525314b2a05.png?resizew=213)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
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【推荐2】已知棱长为1的正方体
,以正方体中心O为球心的球与正方体的各条棱都相切,点P为球面上的动点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.球O的半径![]() |
B.球O在正方体外部分的体积大于![]() |
C.若点P在球O的正方体外部(含正方体表面)运动,则![]() |
D.若点P在球O的正方体外部(含正方体表面)运动,则![]() |
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【推荐1】在直三棱柱
中,
,
,
为
的中点,点
是线段
上的点,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/57fdb574-d0a4-4372-94eb-deebe4039dfb.png?resizew=248)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c4b321951d3394879eddcd93441805.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/57fdb574-d0a4-4372-94eb-deebe4039dfb.png?resizew=248)
A.![]() |
B.存在点![]() ![]() ![]() ![]() |
C.当点![]() ![]() ![]() ![]() |
D.当点![]() ![]() ![]() ![]() ![]() |
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【推荐2】已知正方体
的棱长为1,若
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346f3a859b4c89e3347a69a0a598ac70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934e5acdc1dc0f29e8f6e2bdb7b578f4.png)
A.![]() ![]() ![]() | B.若![]() ![]() |
C.异面直线![]() ![]() ![]() | D.![]() |
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