名校
1 . 如图,直角
中,
,
,
,点
是边
上一点,将
绕点
顺时针旋转
到点
,则
长的最小值是_____ .
![](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/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
2024-04-15更新
|
146次组卷
|
11卷引用:河南省洛阳市2023-2024学年九年级上学期期中数学试题
河南省洛阳市2023-2024学年九年级上学期期中数学试题河南省洛阳市洛龙区2023-2024学年九年级上学期期中数学试题2023年江苏省扬州市仪征市一模数学试题(已下线)专题10 图形的对称、平移、旋转-学易金卷:2023年中考数学一模试题分项汇编(江苏专用)2023年河南省郑州外国语中学中考三模数学试题2023年河南省郑州市郑州高新技术产业开发区郑州外国语学校三模数学试题河南省郑州市东枫外国语学校2023-2024学年九年级上学期12月月考数学试题2024年江苏省徐州市沛县第五中学中考数学一模模拟试题(已下线)查补培优冲刺02 几何最值类综合压轴-【查漏补缺】2024年中考数学复习冲刺过关(江苏专用)广东省佛山市顺德区大良街道2022-2023学年八年级下学期月考数学试题(已下线)专题9.4 图形的旋转(题型分类拓展)-2023-2024学年八年级数学下册基础知识专项突破讲与练(苏科版)
2 . 如图,在正方形ABCD中,对角线AC、BD相交于点O,E、F分别为AC、BD上一点,且OE=OF,连接AF、BE、EF,若∠AFE=25°,则∠CBE的度数为_______ .
您最近一年使用:0次
2024-04-15更新
|
99次组卷
|
2卷引用:海南省省直辖县级行政单位澄迈县第二中学2022-2023学年九年级下学期期中数学试题
名校
3 . 如图,在正方形
中,点E,F分别在
,
上,满足
,连接
,
,点P,Q分别是
,
的中点,连接
.若
.则
可以用α表示为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e46fb91464159b80eab7c28a926b4e.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/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adb689d65900b435ecd81b615fe3617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69b0601b25e7601cbe0eb87005b802b.png)
A.α | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-13更新
|
286次组卷
|
8卷引用:重庆市梁平区梁山初中教育集团2023-2024学年九年级下学期期中考试数学试题
重庆市梁平区梁山初中教育集团2023-2024学年九年级下学期期中考试数学试题重庆市沙坪坝区第一中学校2023-2024学年九年级上学期期末数学试题(已下线)中考热点05 几何求解选择类(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)山东省淄博市高青县2023-2024学年八年级下学期期中数学试题(已下线)第10讲 专题5 正方形中的三大模型-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)(已下线)第05讲 正方形(3个知识点+5类热点题型讲练+习题巩固)-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)(已下线)专题04 矩形、菱形、正方形性质与判定期末真题汇编【八大题型+优选提升题】-备战2023-2024学年八年级数学下学期期末真题分类汇编(人教版)(已下线)2023—2024学年名校期末好题汇编(人教版八年级数学下册)——专题四—特殊的平行四边形
4 . 如图,已知O为正方形
对角线的交点,
平分
交
于点E,延长
到点F,使
,连接
,交
的延长线于点G,连接
.
;
(2)求证:
;
(3)若
,求正方形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01009f2f3a3476fd1efe90291083132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bbfdb1813eaa3896eb7fe4a8c91e72.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5fb4c9279f0f1b0bdc2947341baca15.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daad4b149611c968d5e817ff52da9c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
名校
5 . 如图,在正方形
中,将边
绕A点逆时针旋转30°,得到线段
,连接
,
,
,
交
于点F.
;
(2)求
的值;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5416c43e44b1a1c76ed59d2dce83e981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a702c324e0c76150540c3d32df802077.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66ba239cbf38596abf32bfbedf66afd.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37cf8705254eddf25f88b7bbac8347f.png)
您最近一年使用:0次
名校
6 . 如图,在
中,
的角平分线
交
于点D,并在射线
上另取一点E(不与A重合),使得
,连接
;(保留作图痕迹,不写作法)
(2)在(1)所作图形中,若D恰为线段
的中点,求证;
.(请补全下面的证明过程,不写证明理由)
证明:∵D为
中点
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
∴在
和
中
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ad3e834b13b8cd382b406612d5f4a2.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038df92742be9dca6e3d62a262c6893e.png)
∴
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102ebb908833439c37e364f60f1d4ebb.png)
又∵
是
的角平分线
∴②
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52154425097228893a63b790e1c20d9.png)
∴③
又∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b59f0e6f7fa9c50e7f5cc146ba1af1.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
由此发现一个结论,请完成下列命题:
如果一个三角形的一个内角的角平分线又是对边上的中线,那么④ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518586d91b63569fc317b323835a0c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)在(1)所作图形中,若D恰为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
证明:∵D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
∴在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b265d121f9ebc13671a5719604476a.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ad3e834b13b8cd382b406612d5f4a2.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038df92742be9dca6e3d62a262c6893e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17101383eb0787edaaa35adfcd20d5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102ebb908833439c37e364f60f1d4ebb.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
∴②
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52154425097228893a63b790e1c20d9.png)
∴③
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b59f0e6f7fa9c50e7f5cc146ba1af1.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
由此发现一个结论,请完成下列命题:
如果一个三角形的一个内角的角平分线又是对边上的中线,那么④ .
您最近一年使用:0次
7 . 如图1,
是等腰直角三角形,
,点
在
的内部,连接
,将线段
绕点
逆时针旋转
,得到线段
,连接
、
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/21/82e39630-31c2-4dfd-acb7-5ae30e0ee8de.png?resizew=481)
(1)判断线段
与
的数量关系并给出证明;
(2)如图2,当B、D、E三点在同一条直线上时,写出线段
、
、
的数量关系为 .
(3)如图3,若
,
,点
为线段
中点,当
、
、
三点在同一条直线上时,连接
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/21/82e39630-31c2-4dfd-acb7-5ae30e0ee8de.png?resizew=481)
(1)判断线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)如图2,当B、D、E三点在同一条直线上时,写出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f1bdfe8f60ee0f9e5d1629717d852c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2024-04-09更新
|
163次组卷
|
6卷引用:福建省龙岩市新罗区龙岩市第七中学2023-2024学年九年级上学期期中数学试题
名校
8 . 如图,正方形
的边长为4,点E在
上且
,F为对角线
上一动点,则
周长的最小值为________
![](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/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80d32bd31d565cd7a5fa4b42dc2e040.png)
您最近一年使用:0次
2024-04-07更新
|
266次组卷
|
23卷引用:山东省青岛市青岛实验初级中学市北分校2021-2022学年九年级上学期期中数学试题
山东省青岛市青岛实验初级中学市北分校2021-2022学年九年级上学期期中数学试题湖南省邵阳市大祥区2018年中考数学考前押题卷(已下线)广东卷04—2021年《三步冲刺中考·数学》(广东专版)之第3步中考热身卷河南省周口市鹿邑县2020-2021学年八年级下学期期中数学试题江西省吉安市2020-2021学年九年级上学期第一次月考数学试题山东省青岛市李沧区青岛爱迪学校2021-2022学年九年级上学期9月月考数学试题山东省青岛市胶州市第十中学2022-2023学年九年级上学期11月月考数学试题广东省广州市南海中学2022-2023学年八年级下学期期中数学试卷2023年广东省江城区中考一模数学试题湖南省常德市桃源县2022-2023学年八年级下学期期中数学试题甘肃省静宁县第三中学2022-2023学年九年级下学期第一次月考数学试题山东省青岛市崂山区崂山区实验学校2023-2024学年九年级上学期9月月考数学试题湖南省郴州市桂阳县龙潭中学2023-2024学年八年级下学期期中数学试题北京市大峪中学2023-2024学年八年级下学期期中数学试题2023年四川省宜宾中考数学模拟预测题4云南省普洱市2020-2021学年八年级下学期期末数学试题山东省烟台市莱州市2020-2021学年八年级下学期期末数学试题鲁教版八年级下册第六章特殊平行四边形单元测试数学试题山东省泰安市新泰市2022-2023学年八年级下学期期末数学试题江苏省徐州市沛县第五中学2022-2023学年八年级下学期3月月考数学试题山东省聊城市阳谷县实验中学2023-2024学年八年级下学期3月月考数学试题江苏省徐州市鼓楼区第二十六中学2023-2024学年八年级下学期3月月考数学试题湖北省恩施市旗峰初级中学2023-2024学年八年级下学期月考数学试题
9 . 如图,
是
中
边上的中点,连接
,
点
从点
出发,以每秒
个单位长度的速度沿
的路径运动,运动时间为
秒
,当点
到达点
时停止运动,点
在线段
上同时运动,且始终保持
连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/7c931fdb-1938-4ef7-a00c-e50632f6fa5a.png?resizew=501)
(1)如图1,当点
在线段
上时,求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5beb64db20808a116f5c37524dde6e.png)
(2)如图1,射线
将
的面积分成两部分.
①当射线
将
的面积分成相等的两部分时,求点
运动的时间
;
②当射线
将
的面积分成
(
为正整数)的两部分时,求点
运动的时间
(用含
的式子表示,直接写出结果).
(3)如图2,射线
交线段
于点
,当
时,求点
从
的运动过程中,点
的路径长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/71eabf67153dc7c6fc9665084041481f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3e532561fe028801ee30f097a425e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee1a9b57653b5a3ee92f7d9550deb1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38bc2bb21c209fc5b56e69bd10f290ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/7c931fdb-1938-4ef7-a00c-e50632f6fa5a.png?resizew=501)
(1)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4e1b8436cf2a739c7ba5d3c68165d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5beb64db20808a116f5c37524dde6e.png)
(2)如图1,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①当射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②当射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3867abed8a339e33cfe15ae6358114c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)如图2,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3e532561fe028801ee30f097a425e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
10 . 如图,在
中,
,
,将
绕点A按顺时针旋转
得到
,连接
,它们交于D点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883fc5e3faf39829d60804b59deb1730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec07ca71c03f8c1d6d3a1e2efcdff02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/c0e265e0-2f86-4b72-8305-b62e5fa1918e.png?resizew=159)
您最近一年使用:0次