名校
解题方法
1 . 如图,在直棱柱
中, 点
分别为
的中点, 线段
与线段
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/8eb61854-6fdc-4c5d-9bda-7849bd0f9404.png?resizew=232)
(1)求证: 平面
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b91a14aaa4e8f8d99197a719d22fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695b0b58e60dd3d2da6388848d373a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2aac317b1d6a5873425804a48925b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e7868ec8dd3bafbb50b970c2bd9e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc3e8a1475b983d1a4295db0e16d4c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/8eb61854-6fdc-4c5d-9bda-7849bd0f9404.png?resizew=232)
(1)求证: 平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bdd5574ff93626beee73c75e1fe4fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62fd0b510920be6bc60d170c3ff3da3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8949941bdeebc1157dd7454dd459d414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1abb0689a1b505c02d1db45b4866275d.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在三棱柱
中,
,
,侧面
是正方形,E是
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/dc9a0853-d073-42b7-9d60-f3d113bf13be.png?resizew=204)
(1)求证:
;
(2)
是线段
上的点,且满足
.求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b82fa8f506f8099ca06c36c706db479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f84d1ed2ff6f93bf229c738c58c15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86814dbae9a5343d69bb4647900b3bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4307209e1e5cad88fc1b8163858688ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a93d5b1395e1156f5505f9c47120781.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/dc9a0853-d073-42b7-9d60-f3d113bf13be.png?resizew=204)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4251a66932fb8f300c28a408f0d3b0e9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b677c724bb0e61b8dd26ac6acf367eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e127cd038790fb5e008e72876ee1e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c0089d8eb23cb703c5278aff214cd2.png)
您最近一年使用:0次
21-22高一下·浙江·期中
3 . 已知三棱锥
中,△ABC,△ACD都是等边三角形,
,E,F分别为棱AB,棱BD的中点,G是△BCE的重心.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/4c768d18-52ee-428a-958c-36eeb689cbf2.png?resizew=196)
(1)求异面直线CE与BD所成角的余弦值;
(2)求证:FG
平面ADC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b94651d11df3a469d7ac72e6ac74c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/4c768d18-52ee-428a-958c-36eeb689cbf2.png?resizew=196)
(1)求异面直线CE与BD所成角的余弦值;
(2)求证:FG
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
您最近一年使用:0次
名校
解题方法
4 . 在如图所示的五面体ABCDFE中,面ABCD是边长为2的正方形,AE⊥平面ABCD,
,且
,N为BE的中点,M为CD中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/4251309e-696a-4f16-a0f4-aa9660ee53a7.png?resizew=153)
(1)求证:
平面ABCD;
(2)求三棱锥
的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2140e10a651dd8631dc511a9b62cfca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ad949a90fc75bd445e02a1909b0ec5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/4251309e-696a-4f16-a0f4-aa9660ee53a7.png?resizew=153)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f52445bb5e07d81dea60bcf1dc31267.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3224a8cad410dee32467ed31a66084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c797fccf4eab76bcd661294db08f707.png)
您最近一年使用:0次
5 . 如图四棱锥
中,四边形
为等腰梯形,
,平面
平面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/19356418-47fb-41bf-a81f-5ce220893625.png?resizew=167)
(1)证明:
平面
;
(2)若
在线段
上,且
,求三棱锥
的体积.
![](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/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60efed4284aec260f792aaf14de11659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301baf6cc0628366e6661a87a2d93ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c16d6c5ea2114ec8e4be8959219dd250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b937442ad4cc480adc11bb143559454.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/19356418-47fb-41bf-a81f-5ce220893625.png?resizew=167)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4739ad948445af72d585fe29c745929b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67819423fd2cd6c1977a526859a45285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068a6d4114b70330a766409501d1b368.png)
您最近一年使用:0次
2022-12-06更新
|
832次组卷
|
5卷引用:四川省广安市第二中学校2022-2023学年高二上学期第二次月考数学(文)试题
四川省广安市第二中学校2022-2023学年高二上学期第二次月考数学(文)试题四川省泸县第一中学2022-2023学年高二上学期期末考试数学(文)试题广西邕衡金卷2023届高三上学期第二次适应性考试数学(文)试题广西防城港市高级中学2023届高三上学期1月月考数学(文)试题(已下线)8.6.3平面与平面垂直(第2课时平面与平面垂直的性质定理)(精练)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)
21-22高一下·浙江·期中
名校
6 . 在直三棱柱
中,
,
,
,D是AB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/8d8bf36c-215e-4425-a5f2-85b079e045a5.png?resizew=200)
(1)求三棱锥
的体积;
(2)求证:
∥平面
;
(3)求三棱柱
的外接球的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef01b27051dd18c0041e06406e12ef40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/8d8bf36c-215e-4425-a5f2-85b079e045a5.png?resizew=200)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a7f2b719a8ff2de7883ec2f2c27731.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
(3)求三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
您最近一年使用:0次
2022-09-29更新
|
1444次组卷
|
3卷引用:四川省眉山第一中学2022-2023学年高二上学期10月月考数学(文科)试题
名校
解题方法
7 . 从①
,②G是
的中点,③G是
的内心.三个条件中任选一个条件,补充在下面问题中,并完成解答.在四棱锥
中,底面ABCD是矩形,
底面
,且
,
,
,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/857bc424-f0c7-4582-986c-e9d92e658a8f.png?resizew=175)
(1)判断EF与平面
的位置关系,并证明你的结论;
(2)若G是侧面
上的一点,且________,求三棱锥
的体积.
注:如果选择多个条件分别解答,则按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd44a18989da3cb1ed7eebc42936a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bec03e804f0cea1db5cde2aa185056a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92bbf785cfeb738f91e11dd122d9e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/857bc424-f0c7-4582-986c-e9d92e658a8f.png?resizew=175)
(1)判断EF与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若G是侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5906367509465243251427f1e5e7a0.png)
注:如果选择多个条件分别解答,则按第一个解答计分.
您最近一年使用:0次
2022-11-24更新
|
378次组卷
|
6卷引用:四川省遂宁中学校2022-2023学年高二上学期期中考试数学(文)试题
四川省遂宁中学校2022-2023学年高二上学期期中考试数学(文)试题山东省潍坊市寿光现代中学2022-2023学年高二上学期11月综合二数学试题山东省潍坊市2020-2021学年第一学期高二期中考试数学试题(已下线)大题专项训练14:立体几何(计算面积、体积、距离)-2021届高三数学二轮复习(已下线)技巧04 结构不良问题解题策略(精讲精练)-1(已下线)高考新题型-立体几何初步
名校
8 . 如图,在四棱锥
中,
面
,
,
,点
分别为
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/71654a21-d300-4c81-a8f2-9f2d03018911.png?resizew=176)
(1)证明:直线
平面
;
(2)求二面角
的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4762d59261265112fef9ac74d5bb9a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3ca1c27bdc0102bf2c6b306ddd1d95.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/71654a21-d300-4c81-a8f2-9f2d03018911.png?resizew=176)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc6bc85b019e9d158ca1d92feed796e.png)
您最近一年使用:0次
2023-01-15更新
|
1358次组卷
|
11卷引用:四川省达州市2022-2023学年高二上学期期末监测数学(理科)试题
四川省达州市2022-2023学年高二上学期期末监测数学(理科)试题(已下线)第8章 立体几何初步 重难点归纳总结-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)专题2 求二面角的夹角(1)(已下线)上海市华东师范大学第二附属中学2023届高三下学期2月月考数学试题(已下线)8.6.3 平面与平面垂直(1)-2022-2023学年高一数学《考点·题型·技巧》精讲与精练高分突破系列(人教A版2019必修第二册)(已下线)专题8.16 空间角大题专项训练(30道)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)上海市华东师范大学第二附属中学2023届高三最后一模数学试题上海市嘉定区第一中学2024届高三上学期10月月考数学试题上海市同济大学第二附属中学2024届高三上学期期中数学试题海南省琼海市海桂中学2023-2024学年高二上学期期中考试数学试题(B卷)陕西省兴平市南郊高级中学2023-2024学年高二上学期第三次质量检测数学试题
解题方法
9 . 如图,四棱锥
中,底面
为矩形,
平面
,点
在线段
上.
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018152605261824/3022889013248000/STEM/c862174a9a2444ee94fe5993c44e40a7.png?resizew=170)
(1)若
为
的中点,证明:
平面
;
(2)若
,三棱锥
的体积为
,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790e1f26a6b7010bab031c5bfc655c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64b03bdd6fe567c99c15220aebbd63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62dbf33af4bd0497b1d45009d2fece25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64b03bdd6fe567c99c15220aebbd63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b957b55032f113a100990aabe320fcf4.png)
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018152605261824/3022889013248000/STEM/c862174a9a2444ee94fe5993c44e40a7.png?resizew=170)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b957b55032f113a100990aabe320fcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5467f14d09a1668152038ee6a0c94b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9c648c902b4a33c3f9aae7d49d1d45.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d19e6038f464b6b415a9c65985b463d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a61cc84894c9b4caa355c4f0109c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b016c4775a26ae10244b95f915b3df16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55185d5d18d4f348aeed1c2f7f5359b4.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在三棱柱
中,侧棱
底面
,
为棱
的中点.
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/067f5431-6548-40e1-af6e-bb4e97fa9fbf.png?resizew=163)
(1)求证:
∥平面
;
(2)求证:
平面
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63dee45a1084de33934b9abb6bed96ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801785af6f3e92fc7a91bb974cefcd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f4613fe5bd1aafb2d11b0633693e7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/067f5431-6548-40e1-af6e-bb4e97fa9fbf.png?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9078475c350c04bd97666d808dd55a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9078475c350c04bd97666d808dd55a.png)
您最近一年使用:0次
2022-09-29更新
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1695次组卷
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9卷引用:四川省成都市铁路中学2022-2023学年高二上学期第三次月考数学理科试卷
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