1 . 如图,在正三棱柱
中,P为
的中点,Q为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/6/30/3012436291919872/3014785330118656/STEM/17a1f5356621457ca4aa586f749b3968.png?resizew=154)
(1)求证:
平面
;
(2)若
,求AC与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2022/6/30/3012436291919872/3014785330118656/STEM/17a1f5356621457ca4aa586f749b3968.png?resizew=154)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b61346bd4091070ba84a4046f87f365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e367b683581c7cbe018078168f69efc5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e095775876648816d3af187806c5f027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f30c7d15d0840fb5085b16c5ae57f8d.png)
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名校
2 . 《九章算术》中,将四个面都为直角三角形的四面体称为鳖臑.如图,已知PA⊥平面ABC,平面PAB⊥平面PBC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/38d44498-03e0-428d-b0b4-75a07f5649e9.png?resizew=144)
(1)判断四面体P-ABC是否为鳖臑,并给出证明;
(2)若二面角B-AP-C与二面角A-BC-P的大小都是
,求AC与平面BCP所成角的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/38d44498-03e0-428d-b0b4-75a07f5649e9.png?resizew=144)
(1)判断四面体P-ABC是否为鳖臑,并给出证明;
(2)若二面角B-AP-C与二面角A-BC-P的大小都是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
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2卷引用:河南省开封市2021-2022学年高一下学期期末数学试题
名校
3 . 设m、n是两条不同的直线,α、β是两个不同的平面,则下列结论正确的是( )
A.若α//β,m⊂α,n⊂β,则m//n |
B.若α⊥β,m⊂α,n⊂β,则m⊥n |
C.若点A、B到平面α的距离相等,则直线AB//α |
D.若m⊥α,m//β,则α⊥β |
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8卷引用:河南省开封市五县2021-2022学年高一下学期期末考试数学试题
4 . 如图,已知菱形
所在平面与矩形
所在平面相互垂直,且
,
是线段
的中点,
是线段
上的动点.
与
所成的角是否为定值,试说明理由;
(2)若二面角
为
,求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5d1764c94af4b851e602135609108e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147310251a463539f66374c1f452fb67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8379ddbd4f02ccfa502592cc4eeae4f1.png)
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10卷引用:河南省开封市2019-2020学年高一上学期期末数学试题
河南省开封市2019-2020学年高一上学期期末数学试题江苏省连云港市海头高级中学2019-2020学年高一下学期第五次考试数学试题重庆市杨家坪中学2020-2021学年高一下学期第二次月考数学试题(已下线)专题25 二面角相关问题训练-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)(已下线)模块三 专题8(立体几何初步)拔高能力练(北师大版)(已下线)模块三 专题7 大题分类练(立体几何初步)拔高能力练(人教A)(已下线)模块三 专题8大题分类练(立体几何初步)拔高能力练(苏教版)四川省巴中市恩阳区2022-2023学年高二下学期期中文科数学试题(已下线)第二章 立体几何中的计算 专题六 空间定值问题 微点6 空间定值问题综合训练【培优版】福建省龙岩市上杭县第一中学2023-2024学年高一下学期5月月考数学试卷
名校
解题方法
5 . 如图,在四棱锥
中,四边形ABCD为菱形,且
,
平面ABCD,E为BC的中点,F为棱PC上一点.
平面PAD;
(2)若G为PD的中点,
,是否存在点F,使得直线EG与平面AEF所成角的正弦值为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
(2)若G为PD的中点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b5d2943803894bc5d204e75e2d172b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243fcd0b5e7fc1a4d55e191f5fcbd332.png)
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14卷引用:2023届河南省开封市杞县高中高三理科数学第一次摸底试题
2023届河南省开封市杞县高中高三理科数学第一次摸底试题山西省太原市山西大学附属中学2021-2022学年高二下学期6月(总第十次)模块诊断数学试题(已下线)1.2.3 直线与平面的夹角(已下线)9.5 空间向量与立体几何江苏省南京市六合区励志学校高中部2022-2023学年高三上学期第二次调研考试数学试题广东省广州市协和学校2022-2023学年高二上学期11月月考数学试题(已下线)第4讲 空间向量的应用 (2)(已下线)第07讲 空间向量的应用 (2)山东省青岛第五十八中学2023届高三一模数学试题山东省滕州市第五中学2023-2024学年高二上学期10月月考数学试题广东省江门市鹤山市鹤华中学2023-2024学年高二上学期第一次月考数学试题宁夏银川市宁夏育才中学2023-2024学年高三上学期月考五数学(理科)试卷(已下线)黄金卷06(已下线)数学(北京卷03)
6 . 如图,在四棱锥
中,四边形ABCD为菱形,且
,
平面ABCD,E为BC的中点,F为棱PC上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f9adb711-677e-4c8b-998f-20a03b324c74.png?resizew=190)
(1)求证:平面
平面PAD;
(2)当F为PC的中点,且
时,求点P到平面AEF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f9adb711-677e-4c8b-998f-20a03b324c74.png?resizew=190)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
(2)当F为PC的中点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b5d2943803894bc5d204e75e2d172b.png)
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4卷引用:河南省开封市杞县高中2023届高三文科数学第一次摸底试题
名校
解题方法
7 . 如图,在三棱锥
中,D,E分别为
的中点,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/13/b329a1c3-c736-4719-b901-4ac873a1726c.png?resizew=205)
(1)证明:
;
(2)若
,求锐二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1fa484da37a62e28c5781d7bb4f815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e16ee7dd17a0f5720b10b6c5d873f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/13/b329a1c3-c736-4719-b901-4ac873a1726c.png?resizew=205)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48085d319d88a5027c6f5ff9ed133fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e820aec9c1a975242fe6d76408a9cde8.png)
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3卷引用:2022年普通高等学校统一模拟招生考试新未来4月联考理科数学试题
名校
解题方法
8 . 如图,在正三棱柱
中,
,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa3d0db9ad31d33c2883a6efed1dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:河南省开封市联考2022届高三下学期核心模拟卷(中)(一)数学理科试题
名校
解题方法
9 . 如图,在平行四边形
中,
,
,
,
,
分别为线段
,
上的点,且
,
,将
沿
折起至
,连接
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990327633051648/2992159945973760/STEM/914701b6-c50c-48e5-8e62-271877392ebc.png?resizew=224)
(1)点
为
上一点,且
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
平面
;
(2)当三棱锥
的体积达到最大时,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fbc3a1f1e848cf1349b9327be8607d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5da44bd1537984418603aca93fc2e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990327633051648/2992159945973760/STEM/914701b6-c50c-48e5-8e62-271877392ebc.png?resizew=224)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3e1db6ee5f6b59da7baf72645aa342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1290b2fd10d49337a7420fc368cfea75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a148a5584e41408fc74f8bd386b5b8.png)
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10 . 如图,在四棱锥
中,底面
是矩形,
,
是棱
上一点,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/18444d13-930a-4448-9f83-0aa41283c7b2.png?resizew=164)
(1)证明:平面
平面
;
(2)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/8c2753753faf2cb9a0003aa8e3945159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c210601ce24b0171dfa92387f0169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef1284d10483e36aa961cd9a1d9b490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/18444d13-930a-4448-9f83-0aa41283c7b2.png?resizew=164)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
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2022-05-28更新
|
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3卷引用:河南省开封市五校2022-2023学年高一下学期期末联考数学试题