解题方法
1 . 如图,在四棱锥
中,底面
为平行四边形,
,
,
分别是
,
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/1d9936f3-3cfc-44a4-96ce-5289192307bc.png?resizew=154)
![](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/e1fbccd5940f750640993b61f0aa7609.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/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/1d9936f3-3cfc-44a4-96ce-5289192307bc.png?resizew=154)
A.![]() ![]() |
B.三棱锥![]() ![]() ![]() |
C.![]() ![]() |
D.A,E,G,F四点共面 |
您最近一年使用:0次
名校
解题方法
2 . 如图,已知四棱锥
的底面是菱形,对角线
,
交于点
,
,
,
,
底面
,
,
分别为侧棱
,
的中点,点
在
上且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/791c1de8-e2aa-4482-908d-a347e465884c.png?resizew=159)
(1)求证:
,
,
,
四点共面;
(2)求直线
与平面
所成角的正弦值;
(3)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ba1df94176a1f769c7a0a12bf357fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637331a6bcf269d7d3487ee4cfb536f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6f007dbf1c1a36eb031e520608403.png)
![](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/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed30b73beeccafd4ec854237b33e1e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/791c1de8-e2aa-4482-908d-a347e465884c.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
您最近一年使用:0次
2024-02-14更新
|
426次组卷
|
3卷引用:河南省济源市2023-2024学年高二上学期期末质量调研数学试题
河南省济源市2023-2024学年高二上学期期末质量调研数学试题(已下线)第3章 空间向量及其应用(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)江苏省连云港市东海高级中学2023-2024学年高二下学期第一次月考数学试卷
名校
解题方法
3 . 如图,在正四棱柱
中,
,
,
,平面
将该正四棱柱分为上、下两部分,记上部分对应的几何体为
,下部分对应的几何体为
,则( )
![](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/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6ce2b1490c1701906bd56cf5187ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667e1ae8303bb4ac047a3dc3cd01e0bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c04f638fa7af24970c72c494b507989.png)
A.![]() |
B.![]() |
C.![]() ![]() |
D.平面![]() ![]() |
您最近一年使用:0次
2024-02-14更新
|
1234次组卷
|
3卷引用:山西省晋城市2024届高三一模数学试题
名校
解题方法
4 . 如图,棱长为2的正方体
中,
,
分别为
,
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/db7c7654-e150-4540-a927-6007e8cd002d.png?resizew=160)
A.![]() | B.![]() ![]() ![]() |
C.![]() ![]() ![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2024-02-12更新
|
397次组卷
|
2卷引用:河南省郑州市2023-2024学年高二上学期1月期末考试数学试题
解题方法
5 . 如图,在长方体
中,
,点
分别在棱
上,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/96a187dc-51d5-4d09-aa5e-a4479882bdfe.png?resizew=131)
(1)若点
分别为线段
的中点.求证:
四点共面;
(2)在线段
上是否存在一点
,使得平面
与平面
夹角的余弦值为
.若存在,试确定点
的位置,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6ab71c3e2257b91efec052ad339226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ca00309261a540934d9b3ed9ba05b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b1d726cf581f600890723a3cf6cdb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8850b0c525a927cec788b1eadcda7925.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/96a187dc-51d5-4d09-aa5e-a4479882bdfe.png?resizew=131)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0373b7f07be8dc6638eadfc2a4c512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e55fc0be2bcaebb02f2d016f84772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1321a80cec807b35fbf11f12d6a36818.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc3257f37be3274a38ec21b7ce9ebb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08361173b096d18b33210a955e109f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a8258659f872d81086322c3f85cb28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
名校
6 . 如图,棱长为2的正方体
中,点E,F,G分别是棱
的中点,则下列说法错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/35ef8f03-8be7-402b-a58d-b065cfa6381f.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed906c3cc40665e9e6aace40cd4b7708.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/35ef8f03-8be7-402b-a58d-b065cfa6381f.png?resizew=169)
A.直线![]() |
B.![]() |
C.直线![]() ![]() ![]() |
D.过点B,E,F的平面截正方体的截面面积为9 |
您最近一年使用:0次
名校
7 . 在正方体
中,
为
的中点,
为
的中点,
是棱
上靠近
的四等分点,
是棱
上靠近
点的四等分点,点
在正方体的表面上运动,且满足
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b89f3c20ea44122636773fa75c77d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52fe658b20eba2d434183ab7c062d166.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/2514ba47-d472-41b1-8c0d-11dce7c660b0.png?resizew=168)
A.![]() |
B.点![]() ![]() |
C.点![]() |
D.点![]() ![]() |
您最近一年使用:0次
名校
解题方法
8 . 如图,在长方体
中,点
、
分别在棱
,
上,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/7f429009-e7ae-4839-899c-c5ca5034a9a6.png?resizew=130)
(1)求证:
,
,
,
四点共面;
(2)若
,
,
,求平面
与平面
夹角的正弦值;
(3)在(2)的条件下,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f166fe0e3f4196b7a34c5ed309a597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce1f746c5da3cb8280f3a0b724a113f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/7f429009-e7ae-4839-899c-c5ca5034a9a6.png?resizew=130)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
(3)在(2)的条件下,求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
2024·全国·模拟预测
解题方法
9 . 如图,在四棱锥
中,
,
平面
,
,
,
,
分别为棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/39c3e48d-317e-4486-8364-42d203a402a1.png?resizew=146)
(1)若点
满足
,求证:直线
与直线
共面;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74cae9ed52c023155ec0c1c507c1d7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/39c3e48d-317e-4486-8364-42d203a402a1.png?resizew=146)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f03fabf9c43f6890c593af6d3d72d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e07434597c6894a339e3714fa780f76.png)
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名校
解题方法
10 . 如图,已知正方体
的棱长为
为
的中点,过点
作与直线
垂直的平面
,则平面
截正方体
的截面的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc79c14b2ed75664547ddd8ba5b1be9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c798204bbe306b3efd5bc9eae594c171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次