名校
1 . 如图,在正方体
中,点M,N分别为棱
上的动点(包含端点),则下列说法正确的是_____________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/65aec8f5-f26a-4d32-ac7f-88ca59db064c.png?resizew=165)
①当M为棱
的中点时,则在棱
上存在点N使得
;
②当M,N分别为棱
的中点时,则在正方体中存在棱与平面
平行;
③当M,N分别为棱
的中点时,则过
,M,N三点作正方体的截面,所得截面为五边形;
④若正方体的棱长为2,则三棱锥
的体积可能为1;
⑤直线
与平面
所成角的正切值的最小值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281ed7ea4b53f930ebf1bd142893e3b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/65aec8f5-f26a-4d32-ac7f-88ca59db064c.png?resizew=165)
①当M为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66fae8e33cd86fa8dab72704eaafe1ba.png)
②当M,N分别为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281ed7ea4b53f930ebf1bd142893e3b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
③当M,N分别为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281ed7ea4b53f930ebf1bd142893e3b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
④若正方体的棱长为2,则三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95116284af5cbe14446e6a57bf464a45.png)
⑤直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
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2021-12-13更新
|
909次组卷
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2卷引用:云南省师范大学附属中学2022届高三高考适应性月考卷(六)数学(文)试题
名校
2 . 如图所示,三棱柱
中,所有棱长均为2,
,
,
分别在
,
上(不包括两端),
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/be2c64e4-0e11-4201-b26c-867c6f16959d.png?resizew=181)
(1)求证:
平面
;
(2)设
与平面
所成角为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5fd85ee3df1c1c7c499c9f500c99c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5bd86a42a7b5b76ee133a2e47ffd05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/be2c64e4-0e11-4201-b26c-867c6f16959d.png?resizew=181)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72221ee5b504d596ff799c0b356aa0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
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解题方法
3 . 如图,将等腰直角
沿斜边
旋转,使得
到达
的位置,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/b700e49f-33b5-46cf-8904-120b3bf6d21b.png?resizew=157)
(1)证明:平面
平面
.
(2)求二面角
的余弦值.
(3)若在棱
上存在点
,使得
,
,在棱
上存在点
,使得
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90f9fba63790e1e5308fa5a1441d71a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/b700e49f-33b5-46cf-8904-120b3bf6d21b.png?resizew=157)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae50ff4c814b581a78346e548964aae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00f1eaa084baa5272450c34ab1ffde54.png)
(3)若在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffb952f86442845da723fd291564484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1a61e889d0b83ed95a38f1adf4e8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077ad2164c272a0ca4c52f3159b0e486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5987b311288bb1f71556dfe81d936c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79498e1df1280868532f59ee8059a223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
解题方法
4 . 已知直三棱柱
,
,
,
,
,设该直三棱柱的外接球的表面积为
,该直三棱柱内部半径最大的球的表面积为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a39f04d1c3551403dbbed35deb01232.png)
A.![]() | B.![]() |
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|
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8卷引用:云南省师范大学附属中学2022届高三高考适应性月考卷(二)数学(文)
名校
5 . 欲将一底面半径为
,体积为
的圆锥体模型打磨成一个圆柱体和一个球体相切的模具,如图所示,则打磨成的圆柱体和球体的体积之和的最大值为__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c6e55bca72a472f3bedf5896d6139b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e0d1a1a01baad72fd02c7444aec710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6d1d99afa158b4ba4fc0dae562fcc1.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712446477312000/2716878318305280/STEM/daabf6bf-31c1-43a1-bd06-7f01e92bf8ca.png?resizew=352)
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5卷引用:云南衡水实验中学2022届高三上学期期中考试数学(理)试题
云南衡水实验中学2022届高三上学期期中考试数学(理)试题山西省2021届高三二模数学(理)试题重庆市缙云教育联盟2020-2021学年高一下学期期末数学试题江西省鹰潭市贵溪市第一中学2024届高三上学期期中考试数学试题(已下线)湖南省长沙市长郡中学2024届高三上学期月考(二)数学试题变式题15-18
名校
解题方法
6 . 蹴鞠,又名“蹴球”“蹴圆”等,“蹴”有用脚蹴、踢的含义,“鞠”最早系外包皮革、内饰米糠的球,因而“蹴鞠”就是指古人以脚蹴、踢皮球的活动,类似今日的踢足球活动.如图所示,已知某“鞠”的表面上有四个点
,
,
,
满足
,
,则该“鞠”的表面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/952f349c-0ace-46f2-9f19-2140b8a37ac8.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc57c6766087f6306fc2b5fb2addee45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ca455e205c7102724e28803ff20bdd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/952f349c-0ace-46f2-9f19-2140b8a37ac8.png?resizew=130)
A.![]() | B.![]() |
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云南省2021届高三冲刺联考数学(文)试题全国卷地区(老高考)2021届高三下学期4月冲刺联考文科数学试题甘肃省民乐县第一中学2021届高三押题卷(二)数学(理)试题(已下线)专题8.1 与数学文化相关的数学考题-玩转压轴题,进军满分之2021高考数学选择题填空题河南省顶尖名校2021-2022学年高三下学期第二次素养调研文科数学试题苏教版(2019) 必修第二册 过关斩将 第13章 13.3 综合拔高练四川省成都市第七中学2022-2023学年高三上学期阶段性考试数学试题
7 . 已知
是正方体
的中心
关于平面
的对称点,则下列说法中错误的是( )
![](https://img.xkw.com/dksih/QBM/2021/1/25/2643850269401088/2645337520988160/STEM/9912e380bd3942eaa5025505d1799357.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6febc75bf9f0e1c8a4be372ae3f05d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://img.xkw.com/dksih/QBM/2021/1/25/2643850269401088/2645337520988160/STEM/9912e380bd3942eaa5025505d1799357.png?resizew=183)
A.![]() ![]() | B.![]() ![]() |
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云南省昆明市2021届高三上学期”三诊一模“摸底诊断测试数学(文)试题云南省昆明市2021届高三”三诊一模“摸底诊断测试数学(文)试题(已下线)押第10题 立体几何-备战2021年高考数学(文)临考题号押题(全国卷2)福建省宁德第一中学2020-2021学年高一下学期第二次月考数学试题河南省信阳市浉河区新时代学校2021-2022学年高一下学期第三次月考数学试题
名校
解题方法
8 . 如图是某几何体的三视图,其中网格纸上小正方形的边长为1,则该几何体的表面积为( )
![](https://img.xkw.com/dksih/QBM/2021/1/15/2636507696578560/2637236168441856/STEM/1ea1a761-c8e6-4192-a00a-b85c3294925c.png?resizew=200)
![](https://img.xkw.com/dksih/QBM/2021/1/15/2636507696578560/2637236168441856/STEM/1ea1a761-c8e6-4192-a00a-b85c3294925c.png?resizew=200)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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9卷引用:云南师范大学附属中学2021届高三高考适应性月考卷(六)理科数学试题
云南师范大学附属中学2021届高三高考适应性月考卷(六)理科数学试题云南师范大学附属中学2021届高三高考适应性月考卷(六)文科数学试题云南师范大学附属中学2021届高三高考适应性月考卷(六)数学(理)试题(已下线)专题4.1 复杂的三视图问题-玩转压轴题,进军满分之2021高考数学选择题填空题四川省绵阳中学高三2021届高考仿真模拟(一)数学(理)试题四川省绵阳中学2021届高三高考仿真模拟试卷数学(文)试题(一)(已下线)押全国卷(文科)第8,16题 立体几何小题-备战2022年高考数学(文)临考题号押题(全国卷)四川省南充高级中学2022-2023学年高三上学期第二次模拟考试数学理科试题四川省成都市简阳市阳安中学2022-2023学年高三上学期10月月考数学(理科)试题
20-21高二上·江苏南通·期中
9 . 如图,在平面四边形DACB中,
,
,
,现将
沿AB翻折至
,记二面角
的大小为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/3b4bb8cc-cb12-45e0-a191-5532555d2afa.png?resizew=233)
(1)求证:
;
(2)当
时,求直线
与平面ABC所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c863257d994bee7b39c9e0b5ce8ea37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e15db76bb6a4abbf5522e1f975dc27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4c625a55ef1d2920a0605d52c8da23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d29c9fdc9016fe5ebdf8fa4019969a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd606081fe85a262777717651cabb82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d579f10d1cfc46f35a54dd51da15aa64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/3b4bb8cc-cb12-45e0-a191-5532555d2afa.png?resizew=233)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb936d24d3237261a7198e6a70f1a456.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72bf0fce80daad394f2a9d013829c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8b40d14544a9be0bebdb276f0fa865.png)
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2020高三·全国·专题练习
名校
10 . 已知直三棱柱
的底面是正三角形,
,
是侧面
的中心,球
与该三棱柱的所有面均相切,则直线
被球
截得的弦长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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2020-11-26更新
|
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6卷引用:云南省昆明市第一中学2021届高三第八次考前适应性训练数学(理)试题
云南省昆明市第一中学2021届高三第八次考前适应性训练数学(理)试题(已下线)练习4 2021年高考数学二轮小题专练(新高考)江西省莲塘一中、临川二中2021届高三1月联考数学(理)试题(已下线)专题44 立体几何专题训练-2021年高考一轮数学(文)单元复习一遍过(已下线)专题47 空间向量与立体几何专题训练-2021年高考一轮数学(理)单元复习一遍过(已下线)专题47 空间向量与立体几何专题训练-2021年高考一轮数学单元复习一遍过(新高考地区专用)