1 . 如图,在正方形
中,
是边
上一点,
是
延长线上一点,连接
交对角线
于点
,连接
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbde88c76a98a051a13e1b83df8cbd15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b846f6f8a3c721825f2ca488fc7f0d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8卷引用:重庆市云阳县沙沱镇初级中学2023-2024学年九年级上学期期中数学试题
重庆市云阳县沙沱镇初级中学2023-2024学年九年级上学期期中数学试题重庆市渝北实验中学校2023-2024学年九年级下学期数学3月月考模拟试题重庆市渝北区六校联盟2023-2024学年九年级下学期第一次月考数学试题2024年重庆市渝北区 九年级下学期教学大练兵数学试题2024年广东省广州市越秀区中考二模数学试题重庆市渝北区2022-2023学年八年级下学期期末数学试题(已下线)期中押题卷01-【好题汇编】备战2023-2024学年八年级数学下学期期中真题分类汇编(山东专用)(已下线)期末真题必刷04(压轴选填60题12个考点专练)-2023-2024学年八年级数学下学期期末考点大串讲(人教版)
2 . 在等腰中,
,顶角度数为
,点
是平面内一点,连接
,将线段
绕点
顺时针旋转
得到线段
,连接
,
,
.
(1)如图1所示,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)如图2所示,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
(3)在(2)的前提下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b29d66044d614bc0ce7950ad0a931cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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2024-03-20更新
|
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2卷引用:2024年河南省驻马店市新蔡县中考一模考试数学试题
3 . 如图,在
中,
.点
在
上,且
.连接
,线段
绕点
顺时针旋转
得到线段
,连接
,则
的长为()
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40975f7553d8cfa57951b568bae9c464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08563258278e0fe2e9917d804a5a63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/4df714d3-da86-4aa5-85e2-e683a2991d78.png?resizew=159)
A.![]() | B.![]() | C.3 | D.![]() |
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4 . 如图,在
和
中,
,点M,N,P分别为
的中点,若
绕点A在平面内自由旋转,则
面积S的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58afe9da8c866938fff32937a87674d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14258dd9c590594c536a40c3cd211e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23b488f961d9fde37feb7f5c497c0d9.png)
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|
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6卷引用:江苏省徐州市沛县第五中学2023-2024学年九年级下学期第一次学情调研数学试题
江苏省徐州市沛县第五中学2023-2024学年九年级下学期第一次学情调研数学试题2024年江苏省徐州市中考数学模拟预测考试题(已下线)重难点01 三角形综合(8大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(江苏专用)(已下线)考前特训02 图形变化类选题压轴(翻折、旋转、平移)--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06 四边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)查补培优冲刺03 图形变换与几何综合压轴-【查漏补缺】2024年中考数学复习冲刺过关(江苏专用)
解题方法
5 . 如图,大小不同的两块三角板
和
直角顶点重合在点
处,
,
,连接
、
,点
恰好在线段
上.
(2)猜想
与
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ead706ccc238d868654030a3626847c.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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14卷引用:易错模型01 全等模型(八大易错分析+变式训练+易错题通关)-备战2024年中考数学考试易错题 (全国通用)
(已下线)易错模型01 全等模型(八大易错分析+变式训练+易错题通关)-备战2024年中考数学考试易错题 (全国通用)山东省济宁市梁山县第二中学2021-2022学年八年级上学期第一次月考数学试题(已下线)专题4.27 探索三角形全等几何模型(手拉手模型)(专项练习)-2022-2023学年七年级数学下册基础知识专项讲练(北师大版)(已下线)重难点03 全等三角形(4种模型2种添加辅助线方法)-【满分全攻略】2022-2023学年七年级数学下学期核心考点+重难点讲练与测试(沪教版)(已下线)专题13.9 全等三角形的九大经典模型-2023-2024学年八年级数学上册举一反三系列(华东师大版)(已下线)专题1.3 全等三角形的九大经典模型-2023-2024学年八年级数学上册举一反三系列(苏科版)(已下线)专题1.7 全等三角形的九大经典模型-2023-2024学年八年级数学上册举一反三系列(浙教版)(已下线)专题12.3 全等三角形的九大经典模型-2023-2024学年八年级数学上册举一反三系列(人教版)江苏省海安市十三校2023-2024学年八年级上学期第一次阶段性测试数学试题(已下线)专题14.3 全等三角形的九大经典模型-2023-2024学年八年级数学上册举一反三系列(沪科版)甘肃省陇南育才学校2023-2024学年八年级上学期第一次月考数学试题四川省自贡市蜀光绿盛实验学校2023-2024学年八年级上学期9月月考数学试题陕西省渭南市澄城县2023-2024学年八年级上学期期中数学试题(已下线)暑假作业08 全等三角形常见模型-【暑假分层作业】2024年七年级数学暑假培优练(北师大版)
6 . 如图,点
在一条直线上,
交
于点
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc3f20246e273430011e4a26cfed634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455911b51a0a54977dd26bba28122c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/d2a7db0b-f350-4ded-a8d3-9dd9c0547505.png?resizew=141)
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2卷引用:2024年陕西省西安市第二十三中学中考数学一模试题
7 . 如图,在菱形
中,点M,N分别是边
上的点,
,
,连接
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42bcd664cb33ed0f8cdd34aeb9f6f379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641f95ec25147b69cdfbaa8208e46691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98182f35222d859cf66b18f64383746c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e75db8cecdb349ee18abf4d7b7de19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/811f81eefdcdb32051b3ff61ed78de57.png)
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3卷引用:2024年陕西省渭南市临渭区渭南初级中学中考数学一模试题
8 . 如图,正方形的边长为6,
分别是
边上的点,且
,将
绕点
逆时针旋转
,得到
.
(1)①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4856846221136eadf96150f02199bc5.png)
②当时,求
的长.
(2)类比迁移
若点分别为正方形两条边的延长线上的动点,
三者之间还存在(1)中的关系吗?根据解决(1)中问题的经验加以探究.
①如图2,在正方形中,点
分别是
延长线上的动点,且
、
、
之间的数量关系是什么?请借助图2加以分析,并写出详细的证明过程.
②如图3,在正方形中,点
分别是
延长线上的动点,且
,则
、
之间的数量关系是______(直接写出关系式).
您最近一年使用:0次
9 . 【感知】如图①点
均在
上,
,则
的大小为______度.
【探究】小明遇到这样一个问题:如图②,
是等边三角形
的外接圆,点
在
上(点
不与点
重合),连接
.求证:
.小明发现,延长
至点
,使
,连接
,通过证明
.可推得
是等边三角形,进而得证.下面是小明的部分证明过程:
证明:延长
至点
,使
,连接
.
四边形
是
的内接四边形,
,
,
是等边三角形,
,
.请你补全余下的证明过程.
【应用】如图③,
是
的外接圆,
,点
在
上,且点
与点
在
的两侧,连接
,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1397a061572d8fa403987234e19933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0433f8116768b42642a7f7e5977ce6.png)
【探究】小明遇到这样一个问题:如图②,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e478787ebfeb68a5a7594dbd9eecd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c7267e5313b9b00ef22c94a479fc34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ced5ba0c8666797d290cefca789c833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2cc1d4262a71046a0b378c250c3100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723f9193444a6ab1f4ae4362ceba56a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6accdd9b317c922d335e44911df357.png)
证明:延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2cc1d4262a71046a0b378c250c3100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b027ed57b9c6f24e27ec0ae282c76efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4061ff48ef8addf4deb4ec33d9b91a2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4d1499a2b43106b869faebe3310a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f76f6531524d4f34e30899dc492b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad23d2014068511177011a89fd51ccf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8621258cd4e6f005605244bc0f60fca0.png)
【应用】如图③,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0038fd38bb04187e5cb2d60099c720b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c7267e5313b9b00ef22c94a479fc34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e722b364bbcf0345b490ba3284701e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94aa8802e272b803bd99b485b4640fcc.png)
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名校
10 . 如图(1)正方形
和正方形
,边
在边
上,
,
.将正方形
绕点
逆时针旋转![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07681b79f2f245239f010b523171e26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/6b9892a9-08ae-4f19-af76-b6e0c217ec2b.png?resizew=385)
(1)如图(2)正方形
旋转到此位置,求证:
;
(2)在旋转的过程中,当
时,试求
的长;
(3)在旋转的过程中,连接
,
的延长线交直线
于点
.当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9e716ca556082406c04f9e55c16536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07681b79f2f245239f010b523171e26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/6b9892a9-08ae-4f19-af76-b6e0c217ec2b.png?resizew=385)
(1)如图(2)正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1596f7c0d0bab4e7e586d705d323e0d8.png)
(2)在旋转的过程中,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f224d15ee8fbf3741ec7813549a2924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)在旋转的过程中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680b53673467d5e29454148104e32fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
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