名校
解题方法
1 . 如图,在四面体
中,
为等边三角形,
为以
为直角顶点的直角三角形,
.
,
,
,
分别是线段
,
,
,
上的动点,且四边形
为平行四边形.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
平面
;
(2)设多面体
的体积为
,多面体
的体积为
,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929fa05b0d1d2643776e0d09bf3fec44.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/a5a3d257-1c29-4d14-91f7-32d8c5d642c1.png?resizew=197)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)设多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997e4fa16abb03b00e7db6924e06a566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbdc69d35ac048be3be891555738e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772448efdb1c5fe0899598dd7328fa2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f737b04ce09bc7e1ed86dc9b3c85203b.png)
您最近一年使用:0次
2023-07-04更新
|
1161次组卷
|
2卷引用:重庆市第八中学校2022-2023学年高一下学期期末数学试题
2 . 如图,
为圆锥的顶点,
是圆锥底面的圆心,
为底面直径,
为底面圆
的内接正三角形,且
的边长为
,点
在母线
上,且
,
.
平面
,并求三棱锥
的体积:
(2)若点
为线段
上的动点,当直线
与平面
所成角的正弦值最大时,求此时点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6166b9a5437671bcba31e17c375eb39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ccc5ea250b7067b499cde87098f3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1112ffa328ed486ffc5e4a605eb510e.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
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2023-07-04更新
|
2359次组卷
|
8卷引用:重庆市第一中学校2022-2023学年高一下学期期末数学试题
重庆市第一中学校2022-2023学年高一下学期期末数学试题(已下线)高二上学期第一次月考解答题压轴题50题专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)安徽省宣城中学2023-2024学年高二上学期第一次(10月)月考数学试题山东省招远市第二中学2023-2024学年高二上学期10月月考数学试题湖北省武汉市华中师范大学第一附属中学2023-2024学年高二上学期10月月考数学试题湖北省武汉市华中师范大学第一附属中学2023-2024学年高二上学期数学独立作业(2)(已下线)专题03 空间向量的应用压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)安徽省合肥市第九中学2023-2024学年高二上学期第一次单元质量检测数学试题
名校
解题方法
3 . 已知异面直线
相互垂直,点
分别是
上的点,且
,
,动点
分别位于直线
上,直线
与直线
所成角为
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e2c6628207cd278ad238fbd22235da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eddc8f2ec8daf5df532d5f2d368f959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc6058c5ccad415e93468855faefb7c.png)
A.![]() |
B.若连接点![]() ![]() ![]() ![]() |
C.若点![]() ![]() ![]() |
D.若连接点![]() ![]() ![]() |
您最近一年使用:0次
名校
4 . 在三棱锥
中,
.记二面角
、
、
的大小分别为
、
、
,V为三棱锥
的体积,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e54d5d705db6825f987cb2dbf11702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a4bddf1ea3c5d37f2233a4821909e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850319b7098a23b859791d7da3e63e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a438393ddfc7da1804baf4932442bb35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20f37e376b5392f51bb95aff3eaaa99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104b5a3aca3b79e21a579de54e96c744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc663d6d89b3d2ccea5d63849b9e20b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
名校
5 . 在三棱锥
中,已知
,且二面角
的大小为
,设二面角
的大小为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802941607869601748f8efcaa364afc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c079889aea502b5783046f78728eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0ac3005d5ecd6d4cea0ce99a47ef3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.若![]() ![]() ![]() |
B.二面角![]() |
C.若二面角![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
6 . 以棱长为
的正四面体中心点
为球心,半径为
的球面与正四面体的表面相交部分总长度为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
您最近一年使用:0次
2023-05-27更新
|
1405次组卷
|
10卷引用:重庆市第八中学2023届高三下学期全真模拟数学试题
重庆市第八中学2023届高三下学期全真模拟数学试题重庆市第八中学校2023届高三二模数学试题江苏省连云港市新海高级中学2022-2023学年高二下学期6月月考数学试题广东省东莞市两校2023届高三联合模拟预测数学试题广东省东莞市2023届高三联合模拟预测数学试题福建省福州格致中学2022-2023学年高一下学期期末考试数学试题河北省唐山市第二中学2022-2023学年高一下学期期末数学试题福建省南安市蓝园高级中学2022-2023学年高二下学期期末考试数学试题(已下线)第七章 立体几何与空间向量 第一节 第一课时 基本立体图形及表面积与体积(B素养提升卷)【人教A版(2019)】专题01立体几何与空间向量(第一部分)-高二下学期名校期末好题汇编
名校
解题方法
7 . 在
中,
,
,
,
为
中点,若将
沿着直线
翻折至
,使得四面体
的外接球半径为
,则直线
与平面
所成角的正弦值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f289ef19c7418a898ea18747aa76e783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f67985b822b482f804d56d5df049f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/18743c8af72b34469648451f095fe170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b32ae75c9beabff560f1b52a52d434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-10更新
|
1321次组卷
|
5卷引用:重庆市第八中学校2023-2024学年高二上学期开学适应性训练数学试题
名校
解题方法
8 . 如图①,在等腰梯形
中,
,现将
沿
翻折到
的位置,且平面
平面
,如图②.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/29/d3ce980e-b9f4-4b48-919c-fcd5f011ef48.png?resizew=392)
(1)当
时,求
;
(2)当三棱锥
的体积为
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94db4393d5a047cae91b0222411692c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac48b9ac8efbf41d6ab5242d247bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d498a0467ff3c577a7ed175d7bffd885.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/29/d3ce980e-b9f4-4b48-919c-fcd5f011ef48.png?resizew=392)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220fbc3a2a1db04a91719fc8110e0e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfe0ccf24d760c77535a70c92dad145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab553db354cefd19765db787a6a9b464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-04-28更新
|
1062次组卷
|
2卷引用:重庆市第一中学校2022-2023学年高一下学期5月月考数学试题
名校
9 . 如图,点M、N分别是正四面体
棱
、
上的点,正四面体的边长为3,设
,直线
与直线
所成的角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/e623fdb0-9969-44d1-a6ca-bd9c1c80f016.png?resizew=160)
(1)若
,求三棱锥
体积的最大值;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/91f2a9b923a355694ea487f6c5669a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/e623fdb0-9969-44d1-a6ca-bd9c1c80f016.png?resizew=160)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3f55bfbc8c0ec8f353d199ecbd813b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29cdf6606acdcca96822efc24f5cd14.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4a24b387673d21c3d381bf2f3eae63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
您最近一年使用:0次
名校
解题方法
10 . 如图甲,在等腰直角三角形
中,
,
,
分别为
两直角边上的点,且
,
沿直线
折叠,得到四棱锥
,如图乙,则四棱锥
体积的最大值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/12/c7718c27-91d9-404f-89c0-c1744962f3a5.png?resizew=406)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee73452ee4d5437f1399f1235b95e55f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958f880eccc0a0e15aefc54078d8aa2f.png)
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