名校
1 . 正方体
的棱长为
,
为
的中点,
为线段
的动点,过
的平面截该正方体所得的截面记为
,则下列命题正确的序号是_________ .
①当
时,
的面积为
;
②当
时,
为六边形;
③当
时,
与
的交点
满足
;
④当
时,
为等腰梯形;
⑤当
时,
为四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad74f90f6e6893d41d31b52407869da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa858b7c23b77ab2647e01ae4ad57fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf9683720e4da0e637e3835d14f3ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f337c260621716d41888036267e66bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/806fd0d68da868a646a3ebd80ead79af.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ecec69ebfb4d63d11e4859451b6523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
⑤当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3fc8720730dc30792a677e0bec0b50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2017-10-10更新
|
854次组卷
|
2卷引用:江西省抚州市临川区第一中学2017-2018学年高二上学期第一次月考数学(理)试题
真题
2 . 一个正三棱锥的四个顶点都在半径为1的球面上,其中底面的三个顶点在该球的一个大圆上,则该正三棱锥的体积是
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知正四棱柱
的底面边长
,侧棱长
,它的外接球的球心为
,点
是
的中点,点
是球
上任意一点,有以下判断:
①
的长的最大值是9;
②存在过点
的平面,截球
的截面面积是
;
③三棱锥
的体积的最大值是20;
④过点
的平面截球
所得截面面积最大时,
垂直该截面.
其中判断正确的序号是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51f7ce48fc259dac927c95afe4ffbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/1dde8112e8eb968fd042418dd632759e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
②存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ae3e6e1924f2f92529860e905c9d32.png)
③三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d103b4b86ded749a0e4a6255cccd8fe.png)
④过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
其中判断正确的序号是
您最近一年使用:0次
名校
4 . 如图,某三棱锥的正视图、侧视图和俯视图分别是直角三角形、等腰三角形和等边三角形.若该三棱锥的顶点都在同一个球面上,则该球的表面积为
![](https://img.xkw.com/dksih/QBM/2017/6/9/1705248588816384/1707527694802944/STEM/cd2b0f68e2704ee083584c1bae16a1d9.png?resizew=216)
![](https://img.xkw.com/dksih/QBM/2017/6/9/1705248588816384/1707527694802944/STEM/cd2b0f68e2704ee083584c1bae16a1d9.png?resizew=216)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-05-13更新
|
1603次组卷
|
3卷引用:江西省九江第一中学2016-2017学年高二下学期第二次月考数学(文)试题
名校
解题方法
5 . 如图,在等腰梯形
中,
,
为
上一点,且
,平面外两点
满足
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/c88880b9-37bc-4b33-a8a8-86753115c8f2.png?resizew=172)
(1)证明:
平面
.
(2)求该几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29537d324a3849c196b1fd64f362067.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/1e32a859e1616f7a7e4202d58d030794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6e0bfb13d3403be93723a9915c07a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b5bcc9241f391dc6fb21b3713160a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7748d2239148e44784ddacc1d8e77c4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/c88880b9-37bc-4b33-a8a8-86753115c8f2.png?resizew=172)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求该几何体的体积.
您最近一年使用:0次
名校
6 . 如图,在
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c4d7e92eb3c5ccecea6e0510ae857.png)
,
,点
为
的中点,将
沿
折起到
的位置,使
,连接
,得到三棱锥
,若该三棱锥的所有顶点都在同一球面,则该球的表面积是
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/91c0b917-2256-4634-8673-404083e9d249.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c4d7e92eb3c5ccecea6e0510ae857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.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/db5e1441a49e782ff0ef46e776cde06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e2a5a8708c06d509c766863a4d6279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/91c0b917-2256-4634-8673-404083e9d249.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-03-22更新
|
1439次组卷
|
14卷引用:江西省上高二中2022-2023学年高二上学期第三次月考(12月)数学试题
江西省上高二中2022-2023学年高二上学期第三次月考(12月)数学试题安徽省安庆市怀宁县第二中学2020-2021学年高二上学期期中数学(理)试题河北省衡水中学2016-2017学年高一下学期期中考试数学(文)试题2017-2018学年高三二轮数学同步训练:小题压轴突破练(已下线)二轮复习测试专项 【新课标版理科数学】专题五 立体几何(已下线)二轮复习测试专项 【新课标版文科数学】专题五 立体几何河北省定州中学2017-2018学年高一(承智班)下学期第一次月考数学试题【全国百强校】山西省运城市康杰中学2018届高考模拟(四)数学(文)试题安徽省合肥市一中、六中、八中2020-2021学年高一下学期期末联考数学试题安徽省合肥市第六中学2020-2021学年高一下学期期末数学试题湖南省湘潭市第一中学2022届高三下学期3月月考数学试题(已下线)模块六 立体几何 大招11 外接球之汉堡模型(已下线)第二章 立体几何中的计算 专题六 几何体的外接球、棱切球、内切球 微点3 圆柱、直三棱柱及其切割体模型【基础版】(已下线)第三章 折叠、旋转与展开 专题三 球与翻折 微点3 球与翻折综合训练
2010·上海长宁·二模
真题
7 . 棱长为1的正方体
的8个顶点都在球
的表面上,则球
的表面积是_______ ;设
分别是该正方体的棱
,
的中点,则直线
被球
截得的线段长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d70de1ffdd9aa376b09bbcfa12644a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
2016-11-30更新
|
1458次组卷
|
7卷引用:江西省南昌市三校(南昌一中、南昌十中、南铁一中)2016-2017学年高二下学期期末联考数学(文)试题
江西省南昌市三校(南昌一中、南昌十中、南铁一中)2016-2017学年高二下学期期末联考数学(文)试题云南省楚雄市天人中学2021-2022学年高二(A层)10月学习效果监测数学试题(已下线)上海市长宁区2010届高三第二次模拟考试数学理(已下线)上海市长宁区2010届高三第二次模拟考试数学文2007年普通高等学校招生全国统一考试文科数学卷(湖南)(已下线)课时44 几何体的表面积与体积-2022年高考数学一轮复习小题多维练(上海专用)2007年普通高等学校招生考试数学(文)试题(湖南卷)
8 . 如图,在直三棱柱
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/2016/10/22/1573089268776960/1573089275166720/STEM/9ca7ad8d72c2467d84cf5be480dc3b77.png)
(1)求三棱柱
的表面积S;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df209c58c4cc146ef62100e6d3b068d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c38d26d85081a99d51e2f686817e94.png)
![](https://img.xkw.com/dksih/QBM/2016/10/22/1573089268776960/1573089275166720/STEM/9ca7ad8d72c2467d84cf5be480dc3b77.png)
(1)求三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2016-12-04更新
|
833次组卷
|
2卷引用:2016-2017学年江西上高县二中高二文9月月考数学文试卷
9 . 已知底面为边长为
的正方形,侧棱长为
的直四棱柱
中,
是面
上的动点.给出以下四个结论中,正确的个数是
①与点
距离为
的点
形成一条曲线,则该曲线的长度是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f5d873f08859b4b2c05487c1602209.png)
②若
面
,则
与面
所成角的正切值取值范围是
;
③若
,则
在该四棱柱六个面上的正投影长度之和的最大值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8456cee87c4e22351affc28f3a73a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
①与点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f5d873f08859b4b2c05487c1602209.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c99cda5a272bbe32b28575fa51b9f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f5b6dde177ec56f47e337f38dff699.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4b4c90faa3f4e43393b38400ff44b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec978eb43bc4f9e7df83b0d0195dcda.png)
A.![]() | B.1 | C.2 | D.3 |
您最近一年使用:0次
2016-12-04更新
|
934次组卷
|
2卷引用:江西省景德镇市第一中学2021-2022学年高二(1班)上学期期中数学试题
10 . 如图,三棱锥
中,
底面
,
,点
、
分别为
、
的中点.
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572624404840448/1572624411205632/STEM/18df25d062794164addcfdeb7d36dcd5.png)
(1)求证:
平面
;
(2)求三棱锥
的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd35d0f4870f1a741ed46baa908019c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7297be28b748547cc01b7ac5d6ef175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa4dfac8699fc9d121f8542bf365a25.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572624404840448/1572624411205632/STEM/18df25d062794164addcfdeb7d36dcd5.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572624404840448/1572624411205632/STEM/0f5e5c9f9ce34bcf860a2c981a676640.png)
(2)求三棱锥
![](https://img.xkw.com/dksih/QBM/2016/5/9/1572624404840448/1572624411205632/STEM/d6e61a3ce0234d36bb3587a594f7b690.png)
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