名校
1 . 已知圆的方程为
,过点
作该圆的一条切线,切点为
,那么线段
的长度为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50d72b5f7a5ced51cbe2bb1a1267ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f449cadb49859b80c31ef1f68bfe81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
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2019-12-02更新
|
338次组卷
|
2卷引用:北京市海淀区清华大学附属中学2019-2020学年高二上学期期中数学试题
2 . 圆
与圆
的公共弦长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ad3edd8f421bcac61ac2efef92d471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78293fc50409269a9219be02b5dc403.png)
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2020-03-04更新
|
252次组卷
|
3卷引用:甘肃省白银市会宁县2018-2019学年高一下学期期末数学试题
甘肃省白银市会宁县2018-2019学年高一下学期期末数学试题(已下线)4.2.2 圆与圆的位置关系-2020-2021学年高一数学课时同步练(人教A版必修2)安徽省宣城市六校2021-2022学年高二上学期期中联考数学试题
3 . 两条互相垂直的直线
与l2:
的交点在圆
上,则圆
的半径为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac5b4a85177ac8cb1b09abbb5cf96e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaedbb251db82f8771797cd9f684307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29cb3b6f40a7eda6beb875b229513e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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名校
4 . 若圆
的圆心到直线
的距离为2,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3063ea830299d71f39433447e0e24463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c93c4093f63750592ad63dd781c9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.![]() | B.![]() | C.![]() | D.2 |
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名校
5 . (1)已知直线
与
.若
,求
的值.
(2)已知圆
过
两点,且圆心
在直线
,求圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24ffc824a2c915bc76ee428e7740ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c62a081e5230f5786db5d7825ff94a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1095c036b49c3327baaa2c3c7f746134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)已知圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eab1c5cd5c8f71d445c9ec35df0aa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39179c438fae4a5440c7e49892e0b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
6 . 求满足下列条件的圆的方程:
(1)已知圆
的半径为2,圆心在
轴正半轴上,直线
与圆
相切,求圆
的方程;
(2)求过三点
,
,
的圆的方程.
(1)已知圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee21990a5e60a242e02b182ad167a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求过三点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6419152065edb8cabf887b65adb4a73.png)
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7 . 方程
表示圆心在直线
上的圆,则该圆的半径为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43bbe2663aa483bc70f7f6af13537f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
A.![]() | B.2![]() | C.![]() | D.6 |
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8 . 在平面直角坐标系
中,
,点
在圆
上运动,则向量
与
的夹角的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93e12b8b1c6c7ec759748229f2c475a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec64476aaca08de0808afda3618109c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
9 . 已知圆
过定点
,且和圆
相切于点
,则圆
的一般方程是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77687078d19ac51c77c72790a8ce26b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949f2a3898e1206635de2938fa8a29c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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10 . (1)已知
,
,
三点共线,求
的值.
(2)求过三点
、
、
的圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe880aa47304aefaf889fdc2333b0b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23871dc247c1509ccfc69deb5ee0f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求过三点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44fbffcf19a245f3428ba0c35937993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2442a318b33a4ee99ca57009c9a2ad1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f669d202c1920f0c2d65b094757e1a21.png)
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