名校
1 . 如图,在棱长为1的正方体
中,
是棱
上的一个动点,给出下列四个结论:
①三棱锥
的体积为定值;
②存在点
使得
平面
;
③
的最小值为
;
④对每一个点
,在棱
上总存在一点
,使得
平面
;
⑤
是线段
上的一个动点,过点
的截面
垂直于
,则截面
的面积的最小值为
.
其中正确的命题的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
①三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bcd4d16a1f2e89bb43fd1731a05ab1.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565133e91e3ace2b2187cfc6f1db5be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a2fee2a78208f17068351405599b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f190b17530d81d927c358ac84757a4.png)
④对每一个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80aa75fd1351786abd39fa546f3c7833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/68789707-893b-4b2a-b900-6f451484d747.png?resizew=165)
其中正确的命题的序号是
您最近一年使用:0次
名校
解题方法
2 . 如图所示,一块边长为10cm的正方形铁片上有四块阴影部分,将这些阴影部分裁下来,然后将余下的四个全等的等腰三角形组成一个正四棱锥、若正四棱锥的各顶点都在同一球面上,底面边长为
单位:
,且
,则该球的半径
(单位:
)的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285912b40e1dce8bfc029df88115c961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d56ed2623c78d6eb2de56adb34061d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffba4c27a768a3d6b0eac78dcf87c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/848ee7cf-1c8c-48b5-a66e-8993ee1954bd.png?resizew=158)
您最近一年使用:0次
2023-04-21更新
|
494次组卷
|
4卷引用:山西省阳泉市第十一中学校2022-2023学年高一下学期期中数学试题
山西省阳泉市第十一中学校2022-2023学年高一下学期期中数学试题山西省晋中市2022-2023学年高一下学期期中数学试题(已下线)第七章 专题1 立体几何中的面积最值问题山西省长治市2022-2023学年高一下学期期中数学试题
名校
3 . 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)
您最近一年使用:0次
名校
4 . 在三棱锥
中,
,
,
两两垂直,
,
,
为棱
上一点,
于点
,则当
的面积取最大值时,三棱锥
的外接球表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.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/9c14427faad52b64c142facdaccb3b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e02fe83ec7038d9729ca0b9df5493e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19dd332eccf6ca418898e64b3a1f583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0756277c18bea4e9c3b74fb28fd58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2e3cac5106bc8a7ad98618c251cb5d.png)
您最近一年使用:0次
2023-06-30更新
|
536次组卷
|
2卷引用:湖北省武汉市华中师范大学第一附属中学2022-2023学年高一下学期6月期末数学试题
名校
5 . 正方体
的棱长为1,点P是
内不包括边界的动点,若
,则线段AP长度的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de60f6ffd5ab327d4cfe32d26d95da70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e1de129bfc451f4c7160cc50666ad8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/73e405f4-7977-479b-b2f9-8e6a26dd00b9.png?resizew=170)
您最近一年使用:0次
2022-11-30更新
|
1036次组卷
|
4卷引用:辽宁省实验中学2022-2023学年高二上学期第二次阶段测试数学试题
解题方法
6 .
,
分别是棱长为1的正方体
的棱
的中点,点
在正方体的表面上运动,总有
,则点
的轨迹所围成图形的面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92ab2e616111dbe7b501161e75ecaba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701a0afc50e0a935f6053639f9c57d1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/8de81bf5-17eb-4c41-b3e4-ebab72d114b7.png?resizew=158)
您最近一年使用:0次
名校
7 . 已知菱形
中,对角线
交于点
,
,将
沿着
折叠,使得
,
,则三棱锥
的外接球的表面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79684a6e92297749c005e2b23cac9710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
您最近一年使用:0次
解题方法
8 . 如图,已知
,
,
是圆柱
的三条母线,
为底面圆
的直径,且
,则三棱锥
的体积最大值为________ .
![](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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8365271d3239f07360fb71e86a8cc3ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3346234091eee0cb6b18673e8e3f55fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/7dc748e9-c27a-4a32-8a52-1b1c2ffe900d.png?resizew=154)
您最近一年使用:0次
2023-05-03更新
|
472次组卷
|
3卷引用:海南省2023届高三学业水平诊断(三)数学试题
名校
解题方法
9 . 如图,在边长为1的正方体
中,
是棱
上的一个动点,给出下列四个结论:
的体积为定值;
②存在点
,使得
平面
;
③对每一个点
,在棱
上总存在一点
,使得
平面
;
④
是线段
上的一个动点,过点
的截面
垂直于
,则截面
的面积的最小值为
.
其中所有正确结论的序号是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bcd4d16a1f2e89bb43fd1731a05ab1.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565133e91e3ace2b2187cfc6f1db5be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
③对每一个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011abe509df00fe9410ab08b585ad7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
其中所有正确结论的序号是
您最近一年使用:0次
2022-07-07更新
|
990次组卷
|
6卷引用:北京市海淀区2021-2022学年高一下学期期末练习数学试题
北京市海淀区2021-2022学年高一下学期期末练习数学试题北京市昌平区第二中学2023届高三上学期期中考试数学试题(已下线)微专题11 立体几何中的截面问题(2)(已下线)模块五 专题3 全真拔高模拟(人教B)北京市中关村中学2023-2024学年高二上学期期中练习数学试题(已下线)专题06 空间中点线面的位置关系6种常考题型归类(2) -期期末真题分类汇编(北京专用)
名校
解题方法
10 . 如图所示,已知三棱锥
中,底面
为等腰直角三角形,斜边
,侧面
为正三角形,D为
的中点,
底面
,则三棱锥
外接球的表面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c14a66ed4bd66df65bc42c4ac1ed15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/2ceca343-2c17-450c-ba9e-882dac415e42.png?resizew=150)
您最近一年使用:0次
2023-11-08更新
|
439次组卷
|
2卷引用:江西省铜鼓中学2024届高三上学期阶段性测试二数学试题