1 . 如图,已知在棱长为2的正方体
中,点E,F,H分别是
,
,
的中点,点G是
上的动点,下列结论中正确的有________________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/cf1e3d64-9f44-4305-9b4d-4d194ea209e0.png?resizew=138)
①
平面ABH ②
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319ad7c7bdb5c5cfa477eb4f5ea57d2b.png)
③直线EF与
所成的角为
④三棱锥
的体积最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/cf1e3d64-9f44-4305-9b4d-4d194ea209e0.png?resizew=138)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cae8fd28341fc24851e03e9ba1d4e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319ad7c7bdb5c5cfa477eb4f5ea57d2b.png)
③直线EF与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf3d35b6763cbc1a423b13a9df2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50c9299f4c44108e7808d6270fe6f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
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解题方法
2 . 在棱长为1的正方体
中,球
以点
为球心,棱
为半径,则平面
被球
截得的区域面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775df7ba0dc94c15e9e706194a463f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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3 . 如因,直线
垂直于圆
所在的平面,
内接于圆
,且
为圆
的直径,
,
,则三棱锥
的外接球的半径为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e5a8fdbfbdf25f6937b7a2d6a4cd95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/c91080fc-35ea-4012-b1d2-7120ccb7711a.png?resizew=146)
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2023-11-25更新
|
161次组卷
|
2卷引用:河南省周口市项城市5校2024届高三上学期11月联考数学试题
名校
4 . 给出下面四个命题:
①过一个球的球心和球面上任意两个点,有且只有一个平面;
②若直线
直线
,直线
平面
,则直线
平面
;
③若直线
直线
,直线
直线
,直线
平面
,则直线
平面
;
④若直线
垂直于直线
在平面
内的射影,则直线
直线
.
则上述结论不正确 的有__________ .(填原号)
①过一个球的球心和球面上任意两个点,有且只有一个平面;
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edaf5492ffc6db02fd5968b643c8b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29acfee233f0903449ca2da4960b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edaf5492ffc6db02fd5968b643c8b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
③若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0967ca2d04a7da2f6c95e0efe07fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0967ca2d04a7da2f6c95e0efe07fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103640e2dd6f0de98eb0a675dde1c72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0967ca2d04a7da2f6c95e0efe07fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
④若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0967ca2d04a7da2f6c95e0efe07fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
则上述结论
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2023·全国·模拟预测
5 . 如图,在长方体
中,点
在平面
内的射影为
,给出以下四个命题:①多面体
的外接球的表面积等于三棱锥
的外接球的表面积;②点
为
的垂心;③
;④
.其中所有正确命题的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb45fee1f7160ebdafe57dfcb5c4733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9e8d0969ba6da74d8b5b6c1ad993e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c967c9b3f669ea78edd838e1d8b59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9185dfbafcae915ef476e74b8c1ebb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42f1b2b66a24a3e18d21c2d5e6e1d09.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/2132469c-f020-4635-8659-ec29f4cc9727.png?resizew=160)
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解题方法
6 . 在三棱锥
中,
,
,
,且
,
,若该三棱锥的体积为
,则三棱锥
外接球的体积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f780afd52b9e0fb11a91933914f952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b546d4123d061cd1bcd825455df62dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8390b8e153b2338b6485552996aea6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48a649fcc7057f6d7da5eb65e9db83a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f17ef2f38ffd644351cfeaae5ccbfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83dbfddc6f98548699ed581e8c8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
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2023-11-16更新
|
857次组卷
|
3卷引用:湖南省师范大学附属中学2023-2024学年高三月考(六)数学试题
名校
7 . 已知等边
的边长为2,AD为BC边上的高,以AD为折痕进行折叠,使得二面角
为
,则三棱锥
的外接球的表面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29cc627d76412c236aac6b29fa0fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
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解题方法
8 . 在三棱锥
中,作
平面
,垂足为
.给出下列命题:①若三条侧棱
与底面
所成的角相等,则
是
的重心;②若三个侧面
与底面
所成的二面角相等,则
是
的内心;③若三组对棱
与
与
与
中有两组互相垂直,则
是
的垂心.则其中真命题的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d30637da200a07672ae231b4c5c09cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7404c3005c8c756de47751b7820bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720faa5114c83c34fdecc22c2452ee1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c015029d8c35b7b062248756f97a3564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483324879de464825ba921d7b492ac16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/bbb1d12b-1d6d-42de-98f9-eb6cba07fc6a.png?resizew=159)
您最近一年使用:0次
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9 . 已知正方体的
棱长为2,点M,N分别是棱
,
的中点,点P在平面
内,点Q在线段
上,若
,则
长度的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90dd18184d12e9c1d8d1fca40973166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/8c96f02a-0260-4495-9a16-4f17045a4ec3.png?resizew=146)
您最近一年使用:0次
2023-11-13更新
|
367次组卷
|
13卷引用:广东省茂名市五校联盟2021届高三上学期第一次联考数学试题
广东省茂名市五校联盟2021届高三上学期第一次联考数学试题(已下线)类型二 空间点、线、面的位置关系-【题型突破】备战2022年高考数学二轮基础题型+重难题型突破(新高考专用)海南省文昌中学2022届高三4月段考数学试题江西省泰和中学2023届高三一模文科数学试题江西省泰和中学2023届高三一模理科数学试题(已下线)第二章 立体几何中的计算 专题七 空间范围与最值问题 微点8 空间范围与最值问题综合训练【全国百强校】山西省大同市第一中学2017-2018学年高二5月月考数学(理)试题安徽省蚌埠第三中学2019-2020学年高二上学期期中数学(理)试题北京市师大附中2022-2023学年高二上学期数学期末试题贵州省遵义市第二教育集团2021-2022学年高二上学期期末联考数学(理)试题人教B版(2019) 必修第四册 北京名校同步练习册 第十一章 立体几何初步 本章测试福建省厦门市杏南中学2023-2024学年高二上学期11月期中阶段测试数学试题贵州省遵义市第二教育集团2021-2022学年高二上学期期末联考数学(文)试题
名校
解题方法
10 . 已知四面体
中,
,则该四面体体积的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69ae7bac62b6630a40ae0466dd164d2.png)
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2023-11-12更新
|
317次组卷
|
2卷引用:上海市七宝中学2024届高三上学期期中数学试题