解题方法
1 . 已知正三棱柱
的侧棱长为4,底面边长为
,且它的六个顶点均在球
的球面上,则
两点的球面距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
您最近一年使用:0次
18-19高二下·上海·期中
名校
2 . 平面图形很多可以推广到空间中去,例如正三角形可以推广到正四面体,圆可以推广到球,平行四边形可以推广到平行六面体,直角三角形也可以推广到直角四面体,如果四面体
中棱
两两垂直,那么称四面体
为直角四面体. 请类比直角三角形中的性质给出2个直角四面体中的性质,并给出证明.(请在结论
中选择1个,结论4,5中选择1个,写出它们在直角四面体中的类似结论,并给出证明,多选不得分,其中
表示斜边上的高,
分别表示内切圆与外接圆的半径)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766565857d28617cc4c2a26ecf76ec24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5332ae9dc9d9c4cff2ac5262714d899c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dce64d610e7f309e414d9abe7ff2e3.png)
直角三角形![]() | 直角四面体![]() | |
条件 | ![]() | ![]() |
结论1 | ![]() | |
结论2 | ![]() | |
结论3 | ![]() | |
结论4 | ![]() | |
结论5 | ![]() |
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解题方法
3 . 矩形的一边在
轴上,另两个顶点在函数
的图象上,则此矩形绕
轴旋转而成的几何体的体积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5988c69058c42d69a23ac535877fe27f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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4 . 如图,边长为2的正方形
中,点
、
分别是边
、
的中点,
、
、
分别沿
、
、
折起,使
、
、
三点重合于点
,若四面体
的四个顶点在同一个球面上,则该球的表面积为________ .
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccbf98ff1b1f121ee3aa3dec108ba0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297cd2ccc8db7ee23569710035a73e94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50adb557f4739427bf8478dc15fef88b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](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/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fdb0f5d98c262afe3783b1ac24735f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/308d4797-5903-4c5b-85ff-6916dd9a1ee5.png?resizew=288)
您最近一年使用:0次
2019-11-10更新
|
784次组卷
|
4卷引用:上海市七宝中学2017-2018学年高二下学期期中数学试题
上海市七宝中学2017-2018学年高二下学期期中数学试题(已下线)专题4.5 简单几何体【压轴题型专项训练】-2020-2021学年高二数学下学期期末专项复习(沪教版)(已下线)重难点02 几何体的表面积、体积、轴截面、多面体与球体内切外接问题 (重难点突破解题技巧与方法)-2022-2023学年高二数学考试满分全攻略安徽省亳州市涡阳第—中学2020-2021学年高一下学期第二次质量检测数学试题
5 . 如图,四棱锥
中,
底面
,点
在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/8952a610-ed36-4cfd-8872-b89dc98335f9.png?resizew=198)
(1)求证:
平面
;
(2)若
,求四棱锥
的体积;
(3)若
,作
于F,作
于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27546408b3fc40aed7d7d66e35e5561.png)
,当
变化时,求三棱锥
体积的最大值.
![](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/77056009e9e7d6df3e363a5b3b938f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a763381e4a9e6ac9d9c1df51122570f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/8952a610-ed36-4cfd-8872-b89dc98335f9.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21153660360f36cf3dd1768845514be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bae7599ad243c12d94325ad917f0a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cc33ee7afea61f57d8c5dc43e79596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a33a80f99e4881a1882389996b6aa36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27546408b3fc40aed7d7d66e35e5561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cfd2db87465dec3ea9683840a326dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ca2a6452530eb88899803f94b75540.png)
您最近一年使用:0次
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6 . 如图,在多面体
中,
、
、
均垂直于平面
,
,
,
,
,
,
分别是线段
和
上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/aa7900d4-a54b-4dc0-9f3b-b78aaaab53cb.png?resizew=139)
(1)求
与
所成角的大小;
(2)求二面角
的大小;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d17d14819681c455a91d7678742368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c122ca7141c43c15c783968f5f0dbc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2541f82b49c8a01194a686c0b73d85ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86c589939053ce21ce0a67cf40054a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/aa7900d4-a54b-4dc0-9f3b-b78aaaab53cb.png?resizew=139)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69418f38ada198be25a69cb651e33e04.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebc359166c408c16803f160e73b099e.png)
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7 . 在棱长为1的正方体
中,M为线段
上的动点,则(1)三棱锥
的体积为定值;(2)
;(3)
的最大值为90°;(4)
的最小值为2.其中正确的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7984007fc4798a865c945625c04763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e628175926d3bdc855d506c863c24029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccd487b706305aed52c3b6c6c14ab28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e4cd936b2cedce60363004e1047b18.png)
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8 . 三棱锥
满足:
,
,
,
,则该三棱锥的体积V的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413c799e8fb983e6274ec4be9ff6c431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725c741cbe89c5c8fcf9b872aef1f114.png)
![](https://img.xkw.com/dksih/QBM/2017/4/20/1669770781892608/1670007049969664/STEM/843c02a00c5a4422962552c2c53c68dc.png?resizew=301)
您最近一年使用:0次
2017-04-20更新
|
1062次组卷
|
14卷引用:上海市金山中学2016-2017学年高二下学期期末考试数学试题
上海市金山中学2016-2017学年高二下学期期末考试数学试题2017届上海市黄浦区高三4月高考模拟数学试卷上海市七宝中学2017-2018学年高二下学期期中数学试题上海市松江二中2020-2021学年高二下学期第一次月考数学试题上海外国语大学西外外国语学校2021-2022学年高二上学期期中数学试题(已下线)第10章 空间直线与平面(基础、典型、新文化、压轴)分类专项训练-2022-2023学年高二数学考试满分全攻略(沪教版2020必修第三册)(已下线)期中模拟预测卷02(测试范围:空间向量与立体几何)-2022-2023学年高二数学上学期期中期末考点大串讲(沪教版2020必修第三册+选修一)(已下线)第11章 简单几何体(基础、典型、易错、新文化、压轴)分类分项训练-2022-2023学年高二数学考试满分全攻略(沪教版2020必修第三册)(已下线)常考60题考点专练(沪教版2020必修三全部内容)(1)上海市民办新虹桥中学2023-2024学年高二上学期期中考试数学试卷上海市普陀区桃浦中学2022-2023学年高二上学期10月月考数学试题上海市崇明区横沙中学2023-2024学年高二上学期期末考试数学试题(已下线)期中真题必刷压轴50题专练-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)沪教版(2020) 必修第三册 新课改一课一练 阶段检测2
名校
9 . 正方体
的棱长为
,以顶点
为球心,
为半径作一个球,则球面与正方体的表面相交所得到的所有弧长之和等于________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
您最近一年使用:0次
2017-11-16更新
|
1112次组卷
|
3卷引用:上海市七宝中学2017届高三上学期第一次月考数学试题
名校
10 . 用一个平面去截直立放置的圆柱,得圆柱的下半部分如图,其中
为截面的最低点,
为截面的最高点,
为线段
中点,
为截面边界上任意一点,作
垂直圆柱底面于点
,
垂直圆柱于底面于点
,
垂直圆柱于底面于点
,圆柱底面圆心为
.已知
为底面直径,
在以
为直径的圆周上,
垂直底面,
,
,
,以
为原点,
为
轴正方向,圆柱底面为
平面,
为
轴正方向建立空间直角坐标系,设点
.
![](https://img.xkw.com/dksih/QBM/2019/11/30/2345237225152512/2346704160530432/STEM/bd60d595dc0349cbb253f9582963b433.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2019/11/30/2345237225152512/2346704160530432/STEM/ccdc4ae8e84644b7ac0bac7181b5ad12.png?resizew=485)
(1)求点
的坐标,并求出
与
之间满足的关系式;
(2)三视图是解决立体几何问题时的有效工具,将圆柱下半部分在
平面上的投影作为主视图,在
平面上的投影作为俯视图;在方框中作出主视图,并说明理由;再求出左视图所围区域的面积;
(3)判断截面的边界是什么曲线,并证明.再指出截面的面积(不需要证明)
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893ff0f9b64c66312c37cb7ce90c351d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc416a5b8dc234628e7475387888d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570f8b295ee0c7c60e6fe1dbf054ff52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6f3500ae262485ca77ac00d8c4c247.png)
![](https://img.xkw.com/dksih/QBM/2019/11/30/2345237225152512/2346704160530432/STEM/bd60d595dc0349cbb253f9582963b433.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2019/11/30/2345237225152512/2346704160530432/STEM/ccdc4ae8e84644b7ac0bac7181b5ad12.png?resizew=485)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)三视图是解决立体几何问题时的有效工具,将圆柱下半部分在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d96461d2b3421aed548b754637ca8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
(3)判断截面的边界是什么曲线,并证明.再指出截面的面积(不需要证明)
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