1 . 已知
是以
为圆心,
为半径的圆上任意两点,且满足
,
是
的中点,若存在关于
对称的
两点,满足
,则线段
长度的可能值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f8edea2e5d4e08cf6210d0e9f3fdbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a73e13066f5ab14b07a1588d968578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b768ea6a05cbf45b28fc46c501ba532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
2 . 已知半径为1的圆经过点
,则其圆心到直线
距离的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad42625f296d2a4b65180e2f7b776beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f7fe9912300d47b7b5833e7bce4c82.png)
您最近一年使用:0次
解题方法
3 . 已知圆
:
,直线
:
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ee745282e1b47f06074eac4bfa70a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5e1737bf9f2bb816a087336a61717a.png)
A.直线![]() ![]() |
B.圆![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.直线![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
4 . 已知
分别是椭圆
的右顶点,上顶点和右焦点,若过
三点的圆恰与
轴相切,则
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e82617e4586c46e55b27cd604db1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/016e82617e4586c46e55b27cd604db1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
解题方法
5 . 已知在平面内,圆
,点P为圆外一点,满足
,过点P作圆O的两条切线,切点分别为A,B.若圆O上存在异于A,B的点M,使得
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3abb0e1e1ad9b693528d0eaede594a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86621b933ad9bd3fbcf54342aa7bae31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知直线
.圆
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401ecba0e9a7e9f5c72211bcd8d3027d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11cb7c6c09b41bc75231f45dda7918a4.png)
A.l过定点![]() | B.l与C一定相交 |
C.若l平分C的周长,则![]() | D.l被C截得的最短弦的长度为4 |
您最近一年使用:0次
7 . 已知A,B是直线
:
上的两点,且
,P为圆
:
上任一点,则
面积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698d7ad4f0b131f8287883ed42f79fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236f52e04ddbd7253f44b97c4756ef9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a2d7360d2125440b0c40688505f2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知点
,点Q在圆
上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5cb5feec3ce25af77db52d78ff931d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360219e869c4b3da4e1b822d393ff742.png)
A.点P在直线![]() | B.点P可能在圆C上 |
C.![]() | D.圆C上有2个点到点P的距离为1 |
您最近一年使用:0次
解题方法
9 . 光线从点
射到
轴上,经
轴反射后经过圆
上的点
,则该光线从点A到点
的路线长的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8c934a5b1e5481440d8de919a3771c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0749142e1d5c8f5b3fb8996643559af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.9 | B.10 | C.11 | D.12 |
您最近一年使用:0次
名校
10 . 曲线
所围成的封闭图形的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5026421525a6511863127833f1436b.png)
您最近一年使用:0次