1 . 如图,
是
的直径,
是
的弦,且
平分
,过点
作
的切线,交
的延长线于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/9528a6d4-206a-4d04-ad16-5fe8e84894c3.png?resizew=116)
(1)求证:
;
(2)若点
恰好为
的中点,
,求
的半径.
![](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/97bde5efa645a4c1ed6874088400d6a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/9528a6d4-206a-4d04-ad16-5fe8e84894c3.png?resizew=116)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5427b7b994b860628df3d6b7a07de8.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f9353ca110c8b81561455b232dbc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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2 . 如图所示,在
的正方形网格中,每个小格的顶点叫做格点,点A,B,C,D都在格点上,线段
与
相交于点E,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01b58184ef17d47645f361dcd5b187c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc54a3cd8fc76ea383aeb1acb8f7ec31.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/3286198f-f63a-40c3-8594-8631f5045c86.png?resizew=170)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 如图所示,在
中,
,以
为直径的
分别交
于点
,连接
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c4bb43fbf9d56c1d0e4048abd02cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bbafaa7d8117da1a389816616cf8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5345f892125374809bcaaab5da8d3f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e261a942097fc850672dc68fab43229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
A.1 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
2024-03-13更新
|
137次组卷
|
3卷引用:贵州省黔东南苗族侗族自治州从江县停洞中学2023-2024学年九年级下学期2月月考数学试题
贵州省黔东南苗族侗族自治州从江县停洞中学2023-2024学年九年级下学期2月月考数学试题2024年甘肃省武威市凉州区西营镇九年制学校教研联片二模数学模拟试题(已下线)培优冲刺01 三角形中的常见模型综合训练(14模型)-【查漏补缺】2024年中考数学复习冲刺过关(全国通用)
4 . 如图,在
中,
,在平面内任取一点
,连接
(
),将线段
绕点
逆时针旋转
,得到线段
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/e542e1fb-e199-4d52-9a00-a544f08f6ab9.png?resizew=340)
(1)请根据题意补全图
;
(2)猜测
和
的数量关系并证明;
(3)当点
位于射线
上时,作射线
交于点
,把
绕点
旋转,
,
时,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6834a0601cbb9cb4b6065d25c370216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44037cb7260ff9349e3380a9c2cfa062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/e542e1fb-e199-4d52-9a00-a544f08f6ab9.png?resizew=340)
(1)请根据题意补全图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(2)猜测
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8518c9bd112f86afb26eec99b01934d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
2023九年级上·全国·专题练习
5 . 如图①,是生活中常见的人字梯,也称折梯,用于在平面上方空间进行工作的一类登高工具,因其使用时,左右的梯杆及地面构成一个等腰三角形,看起来像一个“人”字,因而把它形 象的称为“人字梯”.如图②,是其工作示意图,
,拉杆
,
,
米,则两梯杆跨度
、
之间距离为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/19/97cbc822-94a7-4e8d-b194-4bc3e2921376.png?resizew=246)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476b0b8378f4b0f73f3dc5d84d89f616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d42df8bf78a16baa2f46e7f65b2cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835b1602df7a6222ed4cbf17e9263a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/19/97cbc822-94a7-4e8d-b194-4bc3e2921376.png?resizew=246)
A.2米 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-09-17更新
|
168次组卷
|
6卷引用:2024年贵州省黔东南州剑河县第四中学九年级中考模拟阶段评估(一)数学模拟预测题
2024年贵州省黔东南州剑河县第四中学九年级中考模拟阶段评估(一)数学模拟预测题(已下线)第03讲 相似三角形的应用综合(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)(已下线)第03讲 相似三角形的应用综合(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学上册《知识解读·题型专练》(浙教版)(已下线)第05讲 相似三角形的应用综合(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(人教版)(已下线)第05讲 相似三角形的应用综合(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)(已下线)题型02 相似三角形的应用-2
6 . 如图,四边形
是正方形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/1106efbd-6709-4bd8-bd28-17d0b98f07bb.png?resizew=386)
(1)问题解决:如图①,若
,
分别是
,
上的点,且
.求证:
;
(2)类比探究:如图②,若点
,
,
,
分别在
,
,
,
上,且
,求证:
F.
(3)迁移应用:如图③,在
中,
,
,点
是
的中点,点
是
上一点,且
,求
:
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/1106efbd-6709-4bd8-bd28-17d0b98f07bb.png?resizew=386)
(1)问题解决:如图①,若
![](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/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9576dc0787e3a65d7f8ea2a436617c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9327d1c2faee1d33db246ab52e43e4f9.png)
(2)类比探究:如图②,若点
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96461af9193d5d7867ddf8fcbefcaec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e336d8c1385e1a71ae67b7ee01db1d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23131e0a1dd1bf36c70eff2a54fe65e.png)
(3)迁移应用:如图③,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c7d01c3618d579121d95d41a63c565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c029f2663b3fd557c9169e295c353e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96dae1059483b2532096123ee80ee50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9171484a68c84cad91e4f2233392f600.png)
您最近一年使用:0次
名校
7 . 如图,平行于
的直线
把
分成两部分,
,则
的值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00f035919bd70f371b3d18b8eee82f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f4f8e27f307a8a998a3335ba7d1bb4.png)
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2023-04-12更新
|
233次组卷
|
5卷引用:2023年贵州省黔东南十八校中考联考数学模拟预测题(二)
名校
8 . 如图,,反比例函数
的图象过点B,若点A的坐标为
,
,则
您最近一年使用:0次
2023-03-12更新
|
558次组卷
|
8卷引用:2023年贵州省黔东南自治州十八校中考三模数学试题
名校
9 . 如图,在
中,点D,E分别是
上的点,且
,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ed2e3455-2f0c-40ba-b803-7278049a342c.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94768c4b076fabb1ef1d5c318f019e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c260ea3880438a9a7ecbac103a366b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fcfcbe43da94485843b778f0978dce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ed2e3455-2f0c-40ba-b803-7278049a342c.png?resizew=132)
A.1:1 6 | B.1∶18 | C.1:20 | D.1:24 |
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2022-12-15更新
|
736次组卷
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25卷引用:贵州省黔东南苗族侗族自治州从江县停洞中学2023-2024学年九年级下学期2月月考数学试题
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10 . 如图,一次函数
的图象与x轴交于点A,与y轴交于点B,二次函数
的图象与一次函数
的图象交于B、C两点,与x轴交于D、E两点,且D点坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/eb2d69dc-7b15-4ec9-987f-6671869501f3.png?resizew=158)
(1)求抛物线的解析式;
(2)在x轴上找一点P,使
最大,求出点P的坐标;
(3)在x轴上是否存在点P,使得
是以点P为直角顶点的直角三角形?若存在,求出点P的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e091cface0c4a22727634eb480562d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c468dc5cc34c14a188493a21019e8f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e091cface0c4a22727634eb480562d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/eb2d69dc-7b15-4ec9-987f-6671869501f3.png?resizew=158)
(1)求抛物线的解析式;
(2)在x轴上找一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c3bca346d745becb14fbfde0ed318f.png)
(3)在x轴上是否存在点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
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