22-23高一下·浙江湖州·期末
名校
解题方法
1 . 已知面积为
的菱形ABCD如图①所示,其中
,E是线段AD的中点.现将
沿AC折起,使得点D到达点S的位置.
(1)若二面角
的平面角大小为
,求三棱锥
的体积;
(2)若二面角
的平面角
,点F在三棱锥的表面运动,且始终保持
,求点F的轨迹长度的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f63756fe9251e65cc14e1ce9723d4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/5c440f61-f121-4d8a-9b52-70a3da2360d7.png?resizew=403)
(1)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bef3a2b3b1ca1a8dce50114e893599e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bef3a2b3b1ca1a8dce50114e893599e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84114a9fc78953326cc8b33a1f4cc772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4a54cc7818be87a239f6de5f5d05b.png)
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名校
2 . 已知点
是正方体
底面
内一动点,且满足
,设
与平面
所成的角为
,则
的最大值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/c7ba89a2-94f2-4bb6-9fc6-61e9dd7a11c0.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce907e681540797c83646f17f2cc9f39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79039b211d151710a15fc9dda11d6225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/c7ba89a2-94f2-4bb6-9fc6-61e9dd7a11c0.png?resizew=175)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-11-14更新
|
1168次组卷
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6卷引用:浙江省湖州中学2020届高三下学期高考模拟测试(四)数学试题
3 . 如图,已知四棱锥
,
且
,
,
,
,
的面积等于
,E是PD是中点.
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753469786300416/2781031193870336/STEM/37dc3ed6-8a66-441e-993b-dff3af0ce8c3.png?resizew=282)
(Ⅰ)求四棱锥
体积的最大值;
(Ⅱ)若
,
.
(i)求证:
;
(ii)求直线CE与平面PBC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef699f5dc072b853cfe700c6f1abbbae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8751f226cdfbff4119a12c75a8df30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d768ffd5bf75080e8ff5ce6b472c0cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354ec8391bdd39377804ee4dab1d8f1c.png)
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753469786300416/2781031193870336/STEM/37dc3ed6-8a66-441e-993b-dff3af0ce8c3.png?resizew=282)
(Ⅰ)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185e2811de8461a7d5032872258bf433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ea9995a58cbfbd0f8a5c712c2bcce4.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf6c62979a7aa534a191d8387a741e8.png)
(ii)求直线CE与平面PBC所成角的正弦值.
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2卷引用:浙江省湖州市2020-2021学年高一下学期期末数学试题
4 . 已知平面四边形
中,
,现将
沿
折成一个四面体,则当四面体的外接球表面积最小时,异面直线
与
所成角的余弦值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b08f0afde7f0a296215845f36d6279b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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5 . 已知四棱锥
中,底面
为等腰梯形,
,
,
,
是斜边为
的等腰直角三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/15/4400b9e4-0419-4e29-ab2a-826e48dee9d3.png?resizew=176)
(1)若
时,求证:平面
平面
;
(2)若
时,求直线
与平面
所成的角的正弦值.
![](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/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641aa755ada1d83daafc82d5f1fa88db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b660bd8e98d065475eb0a1068cf2725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/15/4400b9e4-0419-4e29-ab2a-826e48dee9d3.png?resizew=176)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd63641dda745cf8917852d3e48fa70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b605cef1be4c42e0cb2d18bfc6f6c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2022-06-13更新
|
680次组卷
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6卷引用:浙江省长兴、余杭、缙云三校2022届高三下学期5月联考数学试题
浙江省长兴、余杭、缙云三校2022届高三下学期5月联考数学试题(已下线)7.3 空间角(精练)(已下线)第4讲 空间向量的应用 (2)重庆市乌江新高考协作体2022-2023学年高二下学期期末数学试题(已下线)第07讲 空间向量的应用 (2)山西省大同市浑源中学2022-2023学年高二下学期期末数学试题
名校
6 . 如图1,在矩形
中,已知
,E为
的中点.将
沿
向上翻折,进而得到多面体
(如图2).
⊥平面
,求直线
与平面
所成角的正切值;
(2)在翻折过程中,求二面角
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7d7574444029298002a42759a6426a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/2db2b1c641b93caae9b7a82441e4ba70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)在翻折过程中,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f89e41e82409d264fac6d39300d4ea5.png)
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2023-09-04更新
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4卷引用:浙江省湖州市第二中学2023-2024学年高一下学期5月月考数学试题
浙江省湖州市第二中学2023-2024学年高一下学期5月月考数学试题浙江省A9协作体2023-2024学年高二上学期暑假返校联考数学试题(已下线)第八章 立体几何初步 单元复习提升(易错与拓展)(2)-单元速记·巧练(人教A版2019必修第二册)(已下线)重难点专题14 利用传统方法解决二面角问题-【帮课堂】(苏教版2019必修第二册)
名校
解题方法
7 . 在四棱锥
中,底面
为菱形,
平面
,
为线段
的中点,
为线段
上的动点,则( )
![](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/31cde1eed3260297ee9eaa73945671f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9be353e587117f019a6aacc8846a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.平面![]() ![]() |
B.三棱锥![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
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2022-09-04更新
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3卷引用:浙江省湖州中学2022-2023学年高二上学期期中数学试题
名校
解题方法
8 . 如图,在四棱锥
中,
平面
,底面
是直角梯形,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
,
,
,若动点
在
内及边上运动,使得
,则三棱锥
的体积最大值为______ .
![](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/411b38a18046fea8e9fab1f9f9b80a5f.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/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c301998d64e8565371dcc4a28debf88b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc24d5628f9d905969dfc323caab303d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edc2e23df190c35aafad93410a05b8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/25/ca2a26c2-9357-4142-b01a-3924931f61b9.png?resizew=175)
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2020-11-17更新
|
1406次组卷
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8卷引用:浙江省湖州市三贤联盟2020-2021学年高二上学期期中联考数学试题
浙江省湖州市三贤联盟2020-2021学年高二上学期期中联考数学试题(已下线)【新东方】【2020】【高二上】【期中】【HD-LP365】【数学】(已下线)【新东方】杭州新东方高中数学试卷363广东省、辽宁省、湖北省、湖南省、重庆市等八省市2021届高三(上)适应性数学试题八省市2021届高三新高考统一适应性考试江苏省无锡市天一中学考前热身模拟数学试题江苏省南京市中华中学2020-2021学年高二上学期期末数学试题(已下线)考点41 点、直线、平面之间的位置关系-备战2021年高考数学经典小题考前必刷(新高考地区专用)江苏省常州市第一中学2021-2022学年高二下学期4月月考数学试题
解题方法
9 . 棱长均为1的正三棱锥
中,
分别是棱
的中点,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5f302c1c2f7e1b46cad05594ed672e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484daa6752e055f12208bf70ce99571f.png)
A.![]() | B.平面![]() ![]() |
C.![]() | D.异面直线![]() ![]() ![]() |
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10 . 如图,在
二面角的棱上有两点A、B,线段AC、BD分别在这个二面角的两个面内,并且都垂直于棱AB,若
,则线段CD的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/4558b691-5c8b-4539-8882-e27d5e25a17d.png?resizew=204)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d97682083decd8f58dc5bd42aab2f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/4558b691-5c8b-4539-8882-e27d5e25a17d.png?resizew=204)
A.![]() | B.16 | C.8 | D.![]() |
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2020-01-09更新
|
1147次组卷
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14卷引用:浙江省湖州市吴兴高级中学2021-2022学年高二上学期10月阶段性测试数学试题
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