1 . 根据圆的性质我们知道,过圆
外的一点
可以作圆
的两条切线,切点为
与
,我们把四边形
称为圆
的“切点四边形”.现已知圆
,圆外有一点
,则圆
的“切点四边形”的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/b5241e0e07a9cd48e4f853405dca1a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.2 | B.4 | C.6 | D.8 |
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2 . 过点
作圆
:
的切线,则切线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c9708ef0dc6d6f5dcf6596d3e4f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7312c19269a2073277bd07b9b2f4912c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-02-26更新
|
679次组卷
|
5卷引用:福建省福州第三中学2022-2023学年高二上学期期末检测数学试题
福建省福州第三中学2022-2023学年高二上学期期末检测数学试题(已下线)专题19 圆的方程-3(已下线)第09讲 2.5.1直线与圆的位置关系(1)(已下线)2.2 直线与圆的位置关系(2)福建省宁德市博雅培文学校2023-2024学年高二上学期第三次月考数学试题
3 . 已知直线l:
是圆C:
的对称轴,过点
作圆的一条切线,切点为A,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ccbfa4df4190907430bf37828edf34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a5941aa4cb09269a186b6c013923b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a8999bce574ea1930fe4707d7d0c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05c938fd42f5cb0b9d21cd44acbec6e.png)
A.![]() | B.7 | C.![]() | D.2 |
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名校
解题方法
4 . 已知直线:
是圆
:
的对称轴,过点
作圆
的一条切线,切点为
,则
( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-02-07更新
|
299次组卷
|
4卷引用:重庆市永川北山中学校2022-2023学年高二下学期入学考试数学试题
重庆市永川北山中学校2022-2023学年高二下学期入学考试数学试题黑龙江省大庆铁人中学2022-2023学年高二上学期期末考试数学试题(已下线)专题2.10 直线和圆的方程全章十类必考压轴题-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)通关练09 圆的方程15考点精练(59题)- 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
名校
5 . 已知圆
,过点
作圆
的一条切线,切点为
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a4b78e0cbb6269bf27c3ee6a03f6ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8265d8eb190eba18526c5e974a32d.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/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
A.![]() | B.![]() | C.8 | D.16 |
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2023-01-18更新
|
323次组卷
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4卷引用:河南省商丘市部分学校2022-2023学年高二上学期期末考试数学试题
河南省商丘市部分学校2022-2023学年高二上学期期末考试数学试题江西省九江外国语学校2023-2024学年高二上学期第一次月考数学试题(已下线)第04讲:圆与方程(必刷10大考题+11大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019)(已下线)专题2.2 直线与圆的位置关系(2个考点十二大题型)(2)
22-23高三上·河南·期末
名校
解题方法
6 . 在平面直角坐标系
中,已知圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac53abed7d45b6fff5c9313969851a.png)
被
轴截得的弦长为2,且与直线
相切,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac53abed7d45b6fff5c9313969851a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf8197e4f3fd18815045d29c357a863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.3 | D.![]() |
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2023-01-15更新
|
266次组卷
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4卷引用:河南省名校联盟2022-2023学年高三上学期1月新未来联考文科数学试题
(已下线)河南省名校联盟2022-2023学年高三上学期1月新未来联考文科数学试题河南省信阳高级中学2022-2023学年高三上学期期末考试文科数学试题陕西省子长市中学2024届高三上学期第三次模拟考试理科数学试题陕西省渭南市瑞泉中学2024届高三第六次质量检测数学(文科)试题
7 . 已知直线
上![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
,过点
向圆
引切线,则切线长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061af1c7a4480004221e253d813efe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c4f63fba4d3d915aa642afc2093a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 设圆
,直线
,
为
上的动点.过点
作圆
的两条切线
,切点为
,给出下列四个结论:
①当四边形
为正方形时,点
的坐标为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da7544af9e0d48ac4a99c8d5290f789.png)
②
的取值范围为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3648f5ebf4a6028f9b3ccdf7975e21.png)
③当
为等边三角形时,点
坐标为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ce2f5e22175e3ff8ab5e0afca58f9c.png)
④直线
恒过定点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a982c17d1a94a9bd81dc27cad133b74.png)
其中正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061af1c7a4480004221e253d813efe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
①当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da7544af9e0d48ac4a99c8d5290f789.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce5dcaffd91bc44cda4a2e44000ae73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3648f5ebf4a6028f9b3ccdf7975e21.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ce2f5e22175e3ff8ab5e0afca58f9c.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a982c17d1a94a9bd81dc27cad133b74.png)
其中正确结论的个数是( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
解题方法
9 . 已知抛物线
的焦点为
,动点
在
上,圆
的半径为1,过点
的直线与圆
相切于点
,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/7c4b7ee5-a05c-4a12-b9fb-2e6a36a5a085.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/fc4b6a40c370f74b54befded692e3fc4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/7c4b7ee5-a05c-4a12-b9fb-2e6a36a5a085.png?resizew=152)
A.-1 | B.0 | C.1 | D.2 |
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10 . 已知圆
,点
在直线
上,过点
作圆
的切线,切点分别为A、B,则切线段
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360219e869c4b3da4e1b822d393ff742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47c0db83f935c93d03e127dc37014ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d063ec7f9dbeba72fabf4437f9400e07.png)
A.1 | B.2 | C.![]() | D.3 |
您最近一年使用:0次