解题方法
1 . 一个圆被
轴分成两段,弧长之比为1:3,被
轴截得弦长为4,求圆心到直线
距离最小时圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934afdd41b042c53d1e54bc73a8713e3.png)
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名校
解题方法
2 . 已知球
是正三棱锥
的外接球,
,点
在线段
上,且
,过点
作球
的截面,则所得截面圆的面积可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740691d83425812720688b061f834927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c4b68aad796dc9d5bf51fe604b61e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-09-16更新
|
1958次组卷
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8卷引用:湖南省长沙市长郡中学2020-2021学年高三上学期月考(三)数学试题
湖南省长沙市长郡中学2020-2021学年高三上学期月考(三)数学试题河北正定中学2021届高三上学期第四次半月考数学试题(已下线)专题17 几何体与球切、接的问题 (练)-2021年高三数学二轮复习讲练测(新高考版)湖北省新高考联考协作体2020-2021学年高二下学期期末数学试题(已下线)专题32 多面体的“内切球”、“外接球”问题求解策略-学会解题之高三数学万能解题模板【2022版】(已下线)第07讲 基本立体图形与直观图(核心考点讲与练)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)(已下线)专题8-2 立体几何中的截面及其归类-1(已下线)【一题多变】外接于球 两心相连
名校
3 . 如图,点C在直径为AB的半圆O上,CD垂直于半圆O所在平面,平面ADE⊥平面ACD,且CD∥BE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/eef206de-b81d-46fe-a5f9-088adbb04306.png?resizew=204)
(1)证明:CD=BE;
(2)若AC=1,AB=
,∠ADC=45°,求四棱锥A -BCDE的内切球的半径.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/eef206de-b81d-46fe-a5f9-088adbb04306.png?resizew=204)
(1)证明:CD=BE;
(2)若AC=1,AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
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2021-08-17更新
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3卷引用:山西省晋城市2020-2021学年高二上学期期中数学(文)试题
名校
4 . 已知三棱锥
中,
,
,
两两垂直,且
,以
为球心,
为半径的球面与该三棱锥表面的交线的长度之和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50094bfee564d9c1b03088ac2ece28c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
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2020-11-30更新
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1051次组卷
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5卷引用:江苏省南通市海安县2020-2021学年高三上学期期中调研考试数学试题
5 . 已知圆C:
,直线l:
.
(1)若圆C截直线l所得弦AB的长为
,求m的值;
(2)若
,直线l与圆C相离,在直线l上有一动点P,过P作圆C的两条切线PM,PN,切点分别为M,N,且
的最小值为
.求m的值,并证明直线MN经过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24f028480333e6f9f0f6a7e0631c9de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff77393ef69270873e512f722609add.png)
(1)若圆C截直线l所得弦AB的长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33348225b1debf7ce354a7bad3ab6bc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51dafedc6530144f32cf56c2f56a3413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9238473e730a4de85619e4a43ad2b75f.png)
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2020-11-27更新
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1481次组卷
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6卷引用:四川省蓉城名校联盟2020-2021学年高二第一学期期中联考理科数学试题
四川省蓉城名校联盟2020-2021学年高二第一学期期中联考理科数学试题安徽省合肥市肥东县第二中学2020-2021学年高二上学期第二次月考数学(理)试题四川省成都市2020-2021学年高二上学期期中数学理科试题(已下线)专题01 《圆与方程》中的典型题(1)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)江苏省南京市第一中学2023-2024学年高二上学期7月阶段性考试数学试题(已下线)第二章直线与圆的方程单元测试(基础版)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)
6 . 如图,线段
为圆
的直径,点
,
在圆
上,
,矩形
所在平面和圆
所在平面垂直,且
,
,则下述正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/86857378-af04-4b56-b0ac-f518975fffc4.png?resizew=166)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ba2124e1ac54a1ac1a684b72718676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96fe32773470e00c9897b78690c7fefa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/86857378-af04-4b56-b0ac-f518975fffc4.png?resizew=166)
A.![]() ![]() |
B.![]() ![]() |
C.点![]() ![]() ![]() |
D.三棱锥![]() ![]() |
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2020-08-07更新
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4卷引用:山东省青岛胶州市2019-2020学年高一下学期期末考试数学试题
山东省青岛胶州市2019-2020学年高一下学期期末考试数学试题广东省佛山一中、珠海一中、金山中学三校2021届高三上学期11月联考数学试题(已下线)黄金卷07-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(新高考专用)(已下线)专题06 立体几何初步(难点)-2020-2021学年高一数学下学期期末专项复习(北师大版2019必修第二册)
解题方法
7 . 已知椭圆
的右焦点为
,左右顶点分别为
,
,上顶点为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/756eb9a840789a7b4b265aa5b2d2958a.png)
(1)求椭圆离心率;
(2)点
到直线
的距离为
,求椭圆方程;
(3)在(2)的条件下,点
在椭圆上且异于
、
两点,直线
与直线
交于点
,说明
运动时以
为直径的圆与直线
的位置关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6fe0f38ab3095ac6575faa02914b8f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/756eb9a840789a7b4b265aa5b2d2958a.png)
(1)求椭圆离心率;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aace91caec728e174daec29a3568ae.png)
(3)在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
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解题方法
8 . 如图,在直三棱柱
中,
,
,
,
,
、
分别为
、
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/14/2462464902111232/2463973772509184/STEM/822a59a9744c41ae9daa109177018372.png?resizew=189)
求证:
平面
;
设
为
上一点,且
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/2020/5/14/2462464902111232/2463973772509184/STEM/822a59a9744c41ae9daa109177018372.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c7c261740ac2ae26715e1298ca278a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f491a794b9ac1a85a18c87ecee616c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53da1233648a05263daed8dfd371447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f491a794b9ac1a85a18c87ecee616c.png)
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解题方法
9 . 已知椭圆
的左、右焦点分别为
,直线l与椭圆C交于A、B两点,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba7267be8fb3db5ec612fb9d8950239.png)
(1)求椭圆C的方程;
(2)若A、B两点关于原点O的对称点分别为
,且
,判断四边形
是否存在内切的定圆?若存在,请求出该内切圆的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5ec79b42eb63e9ac47944979645da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba7267be8fb3db5ec612fb9d8950239.png)
(1)求椭圆C的方程;
(2)若A、B两点关于原点O的对称点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77993759b8615ef0b42cb56ef027ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e21aa38de80da8ccaa7ce51595e7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2fede77a92868b20a768046a4c4514.png)
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解题方法
10 . 正方体
的棱长为1,点
是棱
的中点,点
都在球
的球面上,则球
的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa880f381b117ed4026c0e92a362960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-05-12更新
|
1481次组卷
|
6卷引用:2020届山东省聊城市高三高考模拟(一)数学试题