名校
1 . 如图,正方体
的棱长为
,且
,
分别为
,
的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/9094746b-e876-4e00-9167-91ed6d7b4010.png?resizew=170)
A.![]() ![]() ![]() |
B.![]() |
C.直线![]() ![]() ![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
2023-05-19更新
|
2245次组卷
|
5卷引用:广西柳州地区民族高级中学2022-2023学年高一下学期期中考试数学试题
广西柳州地区民族高级中学2022-2023学年高一下学期期中考试数学试题山东省临沂市临沂第十九中学2022-2023学年高一下学期6月月考数学试题(已下线)期末模拟试卷02-期中期末考点大串讲(已下线)第03讲 空间中平行、垂直问题10种常见考法归类(1)新疆生产建设兵团第三师图木舒克市第一中学2022-2023学年高一下学期6月月考数学试题
名校
2 . 如图,四棱锥
中,底面
为菱形,
的中点为
,
的中点为
,且
平面
.
平面
;
(2)若
,
,
,求直线
与平面
所成角的正弦值.
![](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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371853a703a8dafa6f8e942f46cb8706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
2023-05-11更新
|
1324次组卷
|
3卷引用:广西玉林市博白县中学2022-2023学年高一下学期4月联考数学试题
广西玉林市博白县中学2022-2023学年高一下学期4月联考数学试题天津市英华实验学校2022-2023学年高一下学期第二次统练数学试题(已下线)第13章:立体几何初步 章末检测试卷-【题型分类归纳】
名校
解题方法
3 . 如图,在四棱锥
中,四边形
是等腰梯形,
.点
为棱
的中点,点
为棱
上的一点,且
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/f97d15b3-4c23-4075-aa00-db939dc76256.png?resizew=196)
(1)证明:
平面
;
(2)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
.
![](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/ce8fb8fe0ab08410e6976f53bbc3115a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.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/c34fede59cd1e8b8a467fac144321efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/f97d15b3-4c23-4075-aa00-db939dc76256.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
2023-05-07更新
|
583次组卷
|
2卷引用:广西柳州高级中学、南宁市第二中学2023届高三联考数学(文)试题
4 . 如图,在
中,
,P为
边上一动点,
交
于点D,现将
沿
翻折至
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/8a9365f5-fd24-4bfb-a2e5-ef08bc02456b.png?resizew=166)
(1)
沿
翻折中是否会改变二面角
的大小,并说明理由;
(2)若
,E是
的中点.求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
平面
,并求当平面
平面
时四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8f015217b0d485e6fd1da3802084c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8fe4026f1a0745ab9aa9fe64f0e482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a237d3269ed2ebb073c5741c41915a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/8a9365f5-fd24-4bfb-a2e5-ef08bc02456b.png?resizew=166)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8fe4026f1a0745ab9aa9fe64f0e482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcccbe157f2ff20e323716205096514.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36177d3114fd41fa976b7d2ae780f1a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fb3f6c9c7adfd62c9802aecff8bdc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d94f16de1e3952535f9c6cd2eae28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4864c21e9664fa9111ede6425b09563a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64abc0befb2318656cdacbb69e575693.png)
您最近一年使用:0次
2023-04-26更新
|
460次组卷
|
2卷引用:广西壮族自治区玉林市北流市实验中学2022-2023学年高一下学期5月月考数学试题
名校
解题方法
5 . 如图,在四棱锥
中,
是边长为1的正三角形,平面
平面
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/de1b8752-f357-4381-9c25-9a1175d421d3.png?resizew=166)
(1)求证:
平面
;
(2)求
到平面
的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e29ed30f17b5944e4afc66ab1d5f7394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9ab73fd4ddacc0c1524f8d742c7dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d74bc0e4660fd4670077fc7690a7252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e056089ae36a2892cdc776c89d649294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/206890afe387969cbbc45cfc639fcbe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/de1b8752-f357-4381-9c25-9a1175d421d3.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002cc6a0373255f39172cdee62fb6b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2023-04-20更新
|
628次组卷
|
3卷引用:广西南宁市2023届高三二模数学(文)试题
6 . 如图,在四棱锥
中,
是边长为1的正三角形,面
面
,
,
,
,C为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/65dd729f-51ec-4fa3-b0b0-fb7bafbb16ec.png?resizew=164)
(1)求证:
平面
;
(2)线段
上是否存在点F,使二面角
的余弦值为
,若存在,求
.若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e29ed30f17b5944e4afc66ab1d5f7394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9ab73fd4ddacc0c1524f8d742c7dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec853fb315a3c7ce3699bc4ca0d74f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e056089ae36a2892cdc776c89d649294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/206890afe387969cbbc45cfc639fcbe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/65dd729f-51ec-4fa3-b0b0-fb7bafbb16ec.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f8b463fcecf0a757f386db56e074d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b09bf736f994785cbf62be5ac1b111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1533d5d60816c28511bb4dadbd3c85a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
您最近一年使用:0次
名校
解题方法
7 . 已知四棱锥
中,底面ABCD为平行四边形,
底面ABCD,若
,
,E,F分别为
,
的重心.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/a7720b20-45ce-4f05-95dd-48d4c3c842cc.png?resizew=205)
(1)求证:
平面PBC;
(2)当
时,求平面PEF与平面PAD所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6baf49925a5bcb359b542d45067c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/a7720b20-45ce-4f05-95dd-48d4c3c842cc.png?resizew=205)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
您最近一年使用:0次
2023-04-16更新
|
808次组卷
|
5卷引用:广西梧州市苍梧中学2023届高三5月份高考数学模拟试题
8 . 如图,在四棱锥
中,平面
平面ABCD,
,
,点E在棱BF上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/c14ee36e-3f43-49c8-b43e-4ab66c5df451.png?resizew=141)
(1)求三棱锥
的体积;
(2)判断直线AE与平面DCF是否相交,如果相交,在图中画出交点H(不需要说明理由),并求出线段AH的长;如果不相交,求直线AE到平面DCF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5ba482836565abad208665cf7b9972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf84ed033bd035c2fe7552badd5e447d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6ccd0fffd8d1df432d99f86f9f4678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b9fa6f4dab63cb9d63a3330a0aba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acb013aba6d3165c7512bd8b9957040.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/c14ee36e-3f43-49c8-b43e-4ab66c5df451.png?resizew=141)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488eb032fffcac002d2c1877cc27c6cf.png)
(2)判断直线AE与平面DCF是否相交,如果相交,在图中画出交点H(不需要说明理由),并求出线段AH的长;如果不相交,求直线AE到平面DCF的距离.
您最近一年使用:0次
2023-04-10更新
|
470次组卷
|
4卷引用:广西桂林市、崇左市2023届高三一模数学(文)试题
广西桂林市、崇左市2023届高三一模数学(文)试题广西壮族自治区防城港市2023届高三下学期4月第三次联合调研数学(文)试题(已下线)专题13立体几何(解答题)(已下线)广东省佛山市2024届高三教学质量检测(一)数学试题变式题17-22
解题方法
9 . 如图,在四棱锥
中,底面
为矩形,
平面
,
,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/07855c7d-24eb-4423-8e07-beee009bd930.png?resizew=166)
(1)证明:
平面
.
(2)证明:
平面
.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/07855c7d-24eb-4423-8e07-beee009bd930.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2023-04-05更新
|
836次组卷
|
6卷引用:广西横州市横州中学2020-2021学年高二下学期期末考试数学试题
解题方法
10 . 如图,在正方体
中,
分别为所在棱的中点,
为下底面的中心,则下列结论中错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/76fe4a07-5263-4e90-9c7b-ac815ad79970.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b094411c562930ff2d67b582cfd48cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/76fe4a07-5263-4e90-9c7b-ac815ad79970.png?resizew=190)
A.平面![]() ![]() | B.![]() |
C.![]() | D.![]() ![]() |
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7卷引用:广西玉林市北流市2023届高三年级教学质量检测数学(理)试题