2023·全国·模拟预测
1 . 从
的外接圆上任意一点
分别向
的三边所在直线作垂线,垂直分别为
,
,
,则
,
,
三点共线,这一性质就是著名的西摩松定理,这条直线叫作西摩松直线.若圆
与
轴负半轴、正半轴分别交于点
,
,第一象限内的点
在圆
上,点
关于
轴的对称点为
,点
在
轴及直线
上的射影分别为
,
,则直线
的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/8455657dde27aabe6adb7b188e031c11.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/7121bfdb53eb8307706e8c63c4569b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/ac06bc73b408c6a70bd0f6d24ebb7d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
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2 . 已知圆C:
与圆
,P,Q分别为圆C和圆M上的动点,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5956c8c1ffc3dd9ddce8359f11b075.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24482676ca3324dff073ade7ec07da7c.png)
A.过点(2,1)作圆M的切线有且仅有一条 |
B.不存在实数a,使得圆C和圆M恰有一条公切线 |
C.若圆C和圆M恰有3条公切线,则![]() |
D.若![]() ![]() |
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3 . 已知
,
,点P满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5a6145990adf5574f0e0f2fc828ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3326927e4b01e981a19109633141e06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed40bce11976e6d1a7274116c69c379.png)
A.点P在以AB为直径的圆上 | B.![]() ![]() |
C.存在点P使得![]() | D.![]() ![]() |
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2023·全国·模拟预测
解题方法
4 . 已知半圆
与直线
相交于A,B两点,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55268440775297514ac28586e85a8bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e969938ac5f3eb429370e2e314bf23.png)
A.直线![]() ![]() |
B.当点B为![]() ![]() |
C.![]() |
D.线段AB长度的最小值为4 |
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名校
解题方法
5 . 剪纸是中国古老的传统民间艺术之一,剪纸时常会沿着纸的某条对称轴对折.将一张纸片先左右折叠,再上下折叠,然后沿半圆弧虚线裁剪,展开得到最后的图形,若正方形
的边长为
,点
在四段圆弧上运动,则
的取值范围为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/7b15fe7c-620e-4162-81ea-e2aef4015ab5.png?resizew=429)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e83b9f01e806bf74042ba41b26423022.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/7b15fe7c-620e-4162-81ea-e2aef4015ab5.png?resizew=429)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-26更新
|
1638次组卷
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8卷引用:河南省新乡市2023届高三下学期第二次模拟考试理科数学试题
河南省新乡市2023届高三下学期第二次模拟考试理科数学试题河南省新乡市2023届高三第二次模拟考试数学(文科)试题(已下线)专题19新文化试题(已下线)专题19新文化试题北京市人大附中2022-2023学年高一下学期期中数学试题河北省石家庄市第二中学2023届高三下学期4月月考数学试题(已下线)第三篇 以学科融合为新情景情境2 跨不同学科融合(已下线)广东省深圳市深圳中学2022-2023学年高一下学期期中数学试题
6 . 已知
,
,设
,
,
,则下列正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5addd0c822fa3c5ac9c7db649f6682cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498634e4ed9d425d5e619aa45d4b5366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8b9f6c2019cef89757744046bde316.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.以![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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7 . 已知曲线
,曲线
,直线
与曲线
的交点记为
,与曲线
的交点记为
.执行如图的程序框图,当
取遍[-1,
]上所有实数时,输出的点构成曲线C,则曲线C围成的区域面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/4731e96b-8c7b-446c-a4d1-55e0cbbf1165.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382f77f848a33e3bebf3e8fd55ac171c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45e9a07c42ac437a0469360cad05d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/690327ef6afcce4e693cee02642835e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8d7da24c485205172663f40a52c962.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/4731e96b-8c7b-446c-a4d1-55e0cbbf1165.png?resizew=166)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-21更新
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233次组卷
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4卷引用:专题18推理证明与算法初步
名校
8 . 已知O为平面点角坐标系的原点,点
,B为圆
上动点,记经过A、B的直线为l,以O为圆心与l相切的圆的面积为
,经过O、A、B三点的圆的面积为
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be51ca81c4e72ec876fa31cf705373b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884d40a97fd767e95f34f3b91ab8d84c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
9 . 已知
,
关于直线
对称的圆记为
,点E,F分别为
,
上的动点,EF长度的最小值为4,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff6382bad1c23c5f04673aeb61f56c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc12f09651ddf5bfd6f527ec691feaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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2023-03-03更新
|
1399次组卷
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4卷引用:福建省福州市普通高中2023届高三毕业班质量检测(二检)数学试题
解题方法
10 . 已知直线
:
,
:
,圆C:
,若圆C与直线
,
都相切,则下列选项一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2297db3c14c256b9691fbb8e5bba978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8bf4c5441af2933c5bd4422b3dfad28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e885d3743ae3d9f0fbd740b75f900083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
A.![]() ![]() ![]() |
B.若圆C的圆心在x轴上,则圆C的半径为3或9 |
C.圆C的圆心在直线![]() ![]() |
D.与两坐标轴都相切的圆C有且只有2个 |
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2023-03-01更新
|
1669次组卷
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3卷引用:广东省汕头市2023届高三第一次模拟数学试题变式题6-10