名校
1 . 如图,在菱形
中,
,交
的延长线于点
,连接
交
于点
,交
于点
,连接
.
(1)求证:
;
(2)求证:
;
(3)若菱形
的边长为
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/60a872ad-e144-4bbe-85c1-923ba3c444a3.png?resizew=137)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1150e7caf86393601b45976f94f3e5.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd17e572c312a13c42e799288dfed6af.png)
(3)若菱形
![](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/9eee296a7d9fba487f1485c61580196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
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2023-10-08更新
|
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9卷引用:湖南省娄底市涟源市2023-2024学年九年级上学期月考数学试题
湖南省娄底市涟源市2023-2024学年九年级上学期月考数学试题四川省成都市成华区2021-2022学年九年级上学期期末数学试题(已下线)(挑战压轴)专项27.2 相似三角形种A字型(2种类型)-2022-2023学年九年级数学下册《同步考点解读·专题训练》(人教版)四川省成都市成华区成都双语实验学校和悦分校2022-2023学年九年级上学期期中数学试题云南省楚雄彝族自治州楚雄市楚雄第一中学2022-2023学年九年级上学期期中数学试题四川省成都市武侯区四川大学附属中学西区学校2023-2024学年九年级上学期期中数学试题四川省成都市武侯区四川大学附属中学新城分校2023-2024学年九年级上学期期中数学试题(已下线)九年级数学上学期期中仿真检测卷02(北师大版,九上全册)-2023-2024学年九年级数学上学期期中期末考点归纳满分攻略讲练(北师大版)江苏省盐城市响水县运河中学2023-2024学年九年级上学期12月月考数学试题
真题
2 . 如图,在
中,
,点
在
边上,连接
,将
绕点
逆时针旋转
得到
,连接
,
.
;
(2)若
时,求
的长;
(3)点
在
上运动时,试探究
的值是否存在最小值,如果存在,求出这个最小值;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c513dca3b8c31bc8d0ed4301e94cc1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28c09d530341a23c5cef61166ad4bca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b19451680eb5cd6b895e5e6457af6a5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf3746205daae4787d8e31d74ba79e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617314ae8af4c2d21ed7b7e83a906365.png)
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2023-10-08更新
|
1212次组卷
|
14卷引用:数学(湖南长沙卷)-学易金卷:2024年中考第一次模拟考试
(已下线)数学(湖南长沙卷)-学易金卷:2024年中考第一次模拟考试2023年四川省甘孜藏族自治州中考数学真题河南省许昌市2023-2024学年九年级上学期期中数学试题山东省德州市宁津县时集镇时集中学2023-2024学年九年级下学期第一次月考数学试题(已下线)突破03 函数问题过程性学习探究型-备战2024年中考数学真题题源解密(全国通用)(已下线)突破05 平移、旋转、折叠等操作探究问题(4类重点考向)-备战2024年中考数学真题题源解密(全国通用)(已下线)专题03 三角形的证明与计算(全等、相似、边角计算)-2024年中考数学二轮热点题型归纳与变式演练(全国通用)(已下线)专题05 三角形中的证明与计算问题-2024年中考数学二轮热点题型归纳与变式演练(江苏专用)(已下线)专题1.3 等腰三角形(直通中考)(分层练习)-2023-2024学年八年级数学下册基础知识专项突破讲与练(北师大版)(已下线)专题17.6 勾股定理(直通中考)(提升练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)(已下线)专题17.14 勾股定理(全章直通中考)(综合练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)(已下线)暑假作业11 三角形和平行四边形中的最值问题和动点问题-【暑假分层作业】2024年八年级数学暑假培优练(北师大版)(已下线)暑假作业01 等腰三角形与直角三角形-【暑假分层作业】2024年八年级数学暑假培优练(北师大版)(已下线)作业02 勾股定理(知识梳理+七大题型专练+能力拓展练)-【暑假分层作业】2024年八年级数学暑假培优练(人教版)
名校
3 . 如图,正方形
的边长为6,E,F分别是
,
边上的点,且
,将
绕点D逆时针旋转
,得到
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/304e8bbc-c536-4384-b0c3-a2ccc236cfa3.png?resizew=157)
(1)求证:
;
(2)当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345c91c9e67e6ee00a872078ab17f094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b43490ca09467a4c8cd8cfe91c94e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366f51d41a3989f78882fb1358fa6119.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/304e8bbc-c536-4384-b0c3-a2ccc236cfa3.png?resizew=157)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4856846221136eadf96150f02199bc5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
2023-10-06更新
|
338次组卷
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22卷引用:湖南省长沙市浏阳县2018-2019学年九年级下学期期中数学试题
湖南省长沙市浏阳县2018-2019学年九年级下学期期中数学试题河南省信阳市第九中学2018届九年级上学期第二次月考数学试题广东省东莞市寮步镇香市中学2018届九年级上学期阶段考试数学试题湖北省宜城市2018届九年级上学期期中考试数学试题人教版九年级数学上册 第23章 旋转单元测试2018年秋九年级数学上册(武汉):期中检测题湖北省黄石市第八中学2019届九年级上期中检测数学试题北京八中2019届九年级(上)期中数学模拟试卷【全国百强校】河北省武邑中学2019届九年级上学期期末考试数学试题湖北省黄石市第八中学2019届九年级上学期数学期中考试试卷福建省龙岩市永定三中2019届九年级(上)第一次月考数学试题安徽省宿州市埇桥区教育集团2019-2020学年九年级第一次段考数学试题湖北省黄石市黄石港区第十四中学2019-2020学年九年级上学期11月月考数学试题内蒙古自治区赤峰市翁牛特旗翁牛特旗乌丹第一中学2018-2019学年九年级上学期期中数学试题山东省日照市青岛路中学2021-2022学年九年级上学期10月月考数学试题黑龙江省齐齐哈尔市2022-2023学年九年级数学上学期第二次月考数学试卷天津市实验中学滨海学校2022-2023学年九年级上学期期中质量调查数学试题广西壮族自治区南宁市2022-2023学年九年级上学期期中数学试题北京一零一中教育集团2023-2024学年九年级上学期月考数学试题天津市实验中学滨海学校2023-2024学年九年级上学期期中数学试题广东省江门市广雅中学2023-2024学年九年级上学期期中数学试题A卷2016-2017学年江苏省句容市华阳片八年级下学期第一次月考数学试卷
4 . 如图所示,在正方形
中,G为
边中点,连接
并延长交
边的延长线于E点,对角线
交
于F点.
(1)直接写出一个与
相似的三角形: ;
(2)求证:
;
(3)若
,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/6/27c9154e-86fa-4d8e-82ef-d66e9f48df78.png?resizew=167)
(1)直接写出一个与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc7897e3f49075943704f4dbef82e5b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d48852ad433b0da21abf5be0f79260d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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5 . 如图,
是
的外接圆,
,点
是
上一动点
不与点
,
重合
,连接
,
,
,延长
至点
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/c281120a-2e50-422d-8622-ae71657e3a74.png?resizew=169)
(1)求证:
.
(2)若
是
的切线,则四边形
的形状是______.
(3)连接
,
,若
,四边形
是菱形,求
的半径长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1bbbed4fd0a8f0bcf9a84b7ad6e670.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/c281120a-2e50-422d-8622-ae71657e3a74.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7852eb99a283b8f0bd5a4dff3c2def.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164e1cc74e41a2a55d3767c006392bfd.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fa3aea72ccc36948a4a90f7368f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a21484bf5e9a7238298ba1762666e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
您最近一年使用:0次
6 . 如图,已知直线l及直线l外一点P,按照如下步骤进行尺规作图:
①在直线l上取一点A,连接
;
②分别以P、A为圆心,大于
的长为半径画弧,分别交于M、N两点,作直线
,交直线l于点B;
③以O为圆心,
长为半径画弧,交直线
于另一点Q,作直线
.
根据上述尺规作图的步骤和痕迹,请回答下列问题:
(1)下列结论不一定成立的是( )
A.
垂直平分
B.M是
的中点 C.
(2)若
,求
的长.
①在直线l上取一点A,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
②分别以P、A为圆心,大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b774445d98675f8de1d529ccc7bee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
③以O为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/17/39e8e579-48dc-4d1f-a8c2-86860abd52cf.png?resizew=180)
根据上述尺规作图的步骤和痕迹,请回答下列问题:
(1)下列结论不一定成立的是( )
A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4635b3ba280ea836f37948e70f039103.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0712a792667fa62975d11d19a7e85e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
您最近一年使用:0次
7 . 如图,已知
是
的直径,
与
相切于点
,
的弦
,连接
交
于点
,延长
与
交于点
,连接
.
(1)求证:
是
的切线;
(2)求证:
;
(3)若
,
,求
的值.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41af809d00654ef309c42e2316811ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/1a819b87-509c-4525-a6c4-1c5b28d2c66e.jpg?resizew=131)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236f23408a1269e7b9fb1db865a85672.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71888bb567d33079b39d8428ff76553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42f56b246c0eecf454c6ca8f956fb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4953f64aead21c2a2e50a248d88c5a07.png)
您最近一年使用:0次
名校
8 . 如图,在
中,
,
于点E,
,
平分
交
于点F,
的延长线交
于点G,试问:
(1)
与
有何位置关系?请说明理由.
(2)
与
有何数量关系?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/25/e961ea17-ad5e-4e0b-8d0d-c943ab6c07e7.png?resizew=188)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
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名校
9 . 【模型启迪】
(1)如图1,在
中,
为
边的中点,连接
并延长至点
,使
,连接
,则
与
的数量关系为______,位置关系为______;
【模型探索】
(2)如图2,在
中,
为
边的中点,连接
,
为
边上一点,连接
交
于点
,且
.求证:
;
【模型应用】
(3)如图3,在(2)的条件下,延长
至点
,使
,连接
,交
的延长线于点
.若
,
,
,求线段
的长.
(1)如图1,在
![](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/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27ad1745bbdc2c4866ac3af286a8e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1358e073cf900f149bd755b853fd6f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1358e073cf900f149bd755b853fd6f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/1/a0115816-8f17-4ef2-be8f-8b2973e5a79c.png?resizew=546)
【模型探索】
(2)如图2,在
![](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/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.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/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8bb808edb7f81fb3c14c8f3d7f0fad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767efa8adfb71001ad39df9560cbf6a.png)
【模型应用】
(3)如图3,在(2)的条件下,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19e150935c7682911a5e5e797772735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07377d977ef6a8f518b3004564544e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640ba2a15c320ea1e84949e51cc8ca62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
您最近一年使用:0次
2023-08-25更新
|
231次组卷
|
4卷引用:湖南省湘潭市湘潭县江声实验学校2023-2024学年九年级下学期月考数学试题
湖南省湘潭市湘潭县江声实验学校2023-2024学年九年级下学期月考数学试题广西壮族自治区南宁市青秀区天桃实验学校2022-2023学年九年级下学期6月月考数学试题2023年广西南宁市天桃实验学校六月收尾模拟考九年级数学模拟预测题试题(已下线)12.3(培优课)倍长中线(题型精讲精练)-【题型分类精粹】2023-2024学年八年级数学上学期期中期末复习讲练系列【考点闯关】(人教版)
10 . 如图,在
中,
,以AB为直径作
,
与
交于点D,BC与
交于点
,过点
作
,且
,连接![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
,
,①
的长为______ ;②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f79997547fb75e88ad1e2c66989a4a0.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9f641563e8533a5bb39188aa7cc182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebb5baea4ac1668b674a8634e15bcbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c3c8cc8741df2b5d92c70c67b5dbca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b19c646bcb6160197fdf12a9cb31a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f79997547fb75e88ad1e2c66989a4a0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/19/7ba01efb-69a2-4ce5-a5dd-37c454931c51.png?resizew=173)
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