如图,
为
的直径,
为
上一点,过点
作
的切线交
的延长线于点
,
,连接
,若
,则
的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2adacad5359a2da934a6ce80961f601.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
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A.![]() | B.![]() | C.4 | D.![]() |
22-23九年级上·重庆沙坪坝·期末 查看更多[3]
重庆市沙坪坝区南开中学校2022-2023学年九年级上学期期末数学试题重庆市江津中学校2022-2023学年九年级下学期第一次定时作业数学试题(已下线)中考热点04 圆选择题类(4题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)
更新时间:2023-01-19 22:11:32
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【推荐1】如图,在
中,
,将
绕顶点
逆时针旋转得到
,
是
的中点,
是
的中点,连接
.若
,
,则线段
的最大值是()
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/c004dd8c-a0b4-4e3b-a757-d6444086c240.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b185184dc2dc3894a0313fd13f26a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
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A.4 | B.3 | C.2 | D.1 |
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【推荐2】如图放置的
,都是以
为直角顶点的三角形,点
都在直线
上,
,点
在
轴上,
,则点
的坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b3294eb1aacf89d9a2f3b6533673be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e37131b4b21cb0d31246ddb3601fe85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6657ffbaa65c17a59fba88399eefd46.png)
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【推荐1】如图,三角形
中,
的平分线交
于点
,过点
作
,
,垂足分别为
,
,下面四个结论:①
;②
一定平行
;③
垂直平分
;④
;其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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A.①②③ | B.②③④ | C.①③④ | D.①②③④ |
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【推荐2】如图,在
中,
,
,以
为边,在
外构造等边
,连接
,在
上取一点
,使得
,
则下列说法中正确的有( )个
①
;②
;③
平分
;④
;⑤
;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/590cb0f1-7b2f-40f8-a0c6-3708bd0fb6aa.png?resizew=164)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c450e16b76e3d4f39e76f78d8bdd310a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db897dd31a8ff1157616b05398a7aa4c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/590cb0f1-7b2f-40f8-a0c6-3708bd0fb6aa.png?resizew=164)
A.2 | B.3 | C.4 | D.5 |
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【推荐1】如图,在边长为4的正方形ABCD中,AE是以BC为直径的半圆的切线,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/1/4/2894127720718336/2951529335496704/STEM/bfbca0a3-c509-438d-8614-e6492820791a.png?resizew=147)
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【推荐2】如图.,已知
是
的直径,点B为
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是
的切线,点A为切点,且
,则
( )
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