1 . 正三棱柱
中,
,
,O为BC的中点,M是棱
上一动点,过O作
于点N,则线段MN长度的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1a4dd94fed801c9470e4cd3e1edee8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-02-03更新
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1010次组卷
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4卷引用:第七章 立体几何 专题4 空间图形中线段长度的最值问题
(已下线)第七章 立体几何 专题4 空间图形中线段长度的最值问题浙江省温州市2022-2023学年高二上学期期末数学试题(A卷)浙江省温州市2022-2023学年高二上学期期末数学试题(B卷)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
2 . 在平面直角坐标系
中,抛物线
的焦点为
,过点
的直线
交
于
,
两点,其中
的斜率
,
在第一象限,将
沿
轴折叠,得到
,且平面
与平面
互相垂直,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4fb72e39d79b7a0cd892fa5fa34bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18eb48831d349a6a6259cbf94f7c91d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddb54188bbb69622b5c351e2586c3f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42c82a5e292ea4342fd672153e8ce08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e7e1acac9ebcea026939f43a8012ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a4b1e09316251f701e5130e2ae5336.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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解题方法
3 . 如图,在棱长为2的正方体
中,E是线段
的中点,点M,N满足
,其中
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/cfb3f8e0-9c5a-460e-af21-d892b74bb701.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d986676bda25d40783591856703e32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7fe8b6b69bc8dc7636330d83d0d05f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/cfb3f8e0-9c5a-460e-af21-d892b74bb701.png?resizew=188)
A.存在![]() ![]() |
B.![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.当![]() ![]() |
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2023-01-09更新
|
477次组卷
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3卷引用:云南省部分学校2023届高三上学期12月联考数学试题
名校
解题方法
4 . 已知菱形
边长为
,
,
为对角线
上一点,
.将
沿
翻折到
的位置,
移动到
且二面角
的大小为
,则三棱锥
的外接球的半径为______ ;过
作平面
与该外接球相交,所得截面面积的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2924b2e79bc36bd99c08e29a8754c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6166b9a5437671bcba31e17c375eb39.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/a3ea25ef38e4afa8f75ffd0842890289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adc30ce0445824ea5c0e6660cc5660e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb4c6e9a723aa843e6ba62d7c1a3a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2022/12/29/3141352248655872/3142137181036544/STEM/152d1beb2f374a8ebd829c3d3df2cfdb.png?resizew=206)
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2022-12-30更新
|
1034次组卷
|
5卷引用:辽宁省大连市2023届高三上学期期末双基测试数学试题
辽宁省大连市2023届高三上学期期末双基测试数学试题四川省成都市树德中学2022-2023学年高三下学期开学考试数学(文)试题四川省成都市树德中学2022-2023学年高三下学期开学考试数学(理)试题重庆市九龙坡区育才中学校2024届高三上学期第三次联考复习数学试题(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14 多边形折叠成模型综合训练【基础版】
名校
解题方法
5 . 在正方体
中,
为正方形
的中心.动点
沿着线段
从点
向点
移动,有下列四个结论:
①存在点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7d02e9e51072b4c6c25dfee05b77cc.png)
②三棱锥
的体积保持不变;
③
的面积越来越小;
④线段
上存在点
,使得
,且
.
其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d609847e2ff3d64e5a514582c3ead0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a122e25cf4eb9f03ffe5ec823bfc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
①存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7d02e9e51072b4c6c25dfee05b77cc.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb7ec039a06be81be737d6902a33430.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad53e9745d0db9ff5ed73e099b92e3f.png)
④线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198bf739bc00bf9af2a328944e4d1385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a852d1b8ad5024dfba55360e56322ea3.png)
其中所有正确结论的序号是
您最近一年使用:0次
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639次组卷
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3卷引用:北京市大兴区2023届高三上学期期末检测数学试题
北京市大兴区2023届高三上学期期末检测数学试题北京市第一零一中学2023-2024学年高三上学期数学统练五(已下线)1.2.1 空间中的点、直线与空间向量(分层训练)-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第一册)
名校
6 . 如图,三棱锥
的顶点A在平面
上,侧棱
平面
,底面BCD是以B为直角的等腰直角三角形,且平面BCD与平面
平行.
, E是CD中点,M是线段AE上的动点,过点M作平面ACD的垂线交平面
于点N,则点N到点C的距离的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/82c7ca94-38ea-4d7d-a856-f5c52cb2b678.png?resizew=212)
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解题方法
7 . 中国古代数学名著《九章算术》中将底面为矩形且有一条侧棱垂直于底面的四棱锥称为“阳马”.现有一“阳马”的底面是边长为3的正方形,垂直于底面的侧棱长为4,则该“阳马”的内切球表面积为_________ ,内切球的球心和外接球的球心之间的距离为________ .
您最近一年使用:0次
2022-11-10更新
|
982次组卷
|
4卷引用:江苏省扬州市2022-2023学年高三上学期期中数学试题
江苏省扬州市2022-2023学年高三上学期期中数学试题四川省成都石室中学2022-2023学年高三上学期一诊模拟考试数学(理科)试题陕西省实验中学2023届高三上学期第四次模拟考试理科数学试题(已下线)专题13 一网打尽外接球、内切球与棱切球问题 (练习)
22-23高三上·江苏盐城·阶段练习
名校
解题方法
8 . 正六面体
的棱长为2,
为
中点,
为
中点,
为
中点,则( )
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b16f8e09ca2c9055b9bd5ef81906647.png)
A.![]() |
B.![]() |
C.![]() |
D.设平面![]() ![]() ![]() ![]() |
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9 . 在长方体
中,
, 点
在棱
上, 且
, 点
在正方形
内. 若直线
与
所成的角等于直线
与
所成的角, 则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89500377cb2ff988c92716b6768484ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e2028a0e2c443a6430dde7c502a1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-08-21更新
|
1017次组卷
|
3卷引用:贵州省贵阳市2023届高三上学期开学联合考试数学(理)试题
解题方法
10 . 直角
中,
是斜边
上的一动点,沿
将
翻折到
,使二面角
为直二面角,当线段
的长度最小时,四面体
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/a25bbb90f1a9d4d05c59b57c216e641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ea25ef38e4afa8f75ffd0842890289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc66a96c1297e7068e987e0e70723e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc84671fd0f27587260cdbcc31e6d483.png)
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