1 . 如图1,在等腰直角三角形ADC中,∠ADC=90°.AD=4.点E是AD的中点,以DE为边作正方形DEFG,连接AG,CE.将正方形DEFG绕点D顺时针旋转,旋转角为a(0°<a<90°).如图2,在旋转过程中.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/30f74ed0-e962-4a98-8557-f0b42b76467b.png?resizew=301)
(1)判断
与
是否全等,并说明理由;
(2)当
时,
与
交于点
,求
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/30f74ed0-e962-4a98-8557-f0b42b76467b.png?resizew=301)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29618a1d688de8d6e9f7a182621e3f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd75c2244c18120b8fc35d5d309ab66.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1d267eeb09c171c3e847f0597be31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
您最近一年使用:0次
2 . 如图,在正方形
中,点M是
边上的任一点,连接
并将线段
绕
顺时针旋转
得到线段
,在
边上取点P使
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/74e120ab-32ef-4fd3-9031-554d94a68040.png?resizew=174)
(1)求证:四边形
是平行四边形;
(2)线段
与
交于点Q,连接
,若
,则
与
存在怎样的数量关系?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da80b21960e7eb7651816ae73e17e12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/74e120ab-32ef-4fd3-9031-554d94a68040.png?resizew=174)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cbb7c62961fa1afa2dbd683375c3fa.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc82c74b0f1d873614690816b1e9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
您最近一年使用:0次
名校
3 . 如图,点C、F、E、B在一条直线上,
,
,
,写出
与
之间的关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e262c815fa6b17db21c14ae53e0dd394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533f1f6ead0d794bb7c70cce9173d4a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c4491b334748bceb87485a33b38638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
您最近一年使用:0次
2023-12-11更新
|
183次组卷
|
55卷引用:江西省赣州市中心城区六校联盟2018届九年级下学期联考数学试题
江西省赣州市中心城区六校联盟2018届九年级下学期联考数学试题2018届人教版九年级数学下册(通用版)检测卷:2018年中考模拟卷(已下线)中考考点总动员 考点26 三角形新疆乌鲁木齐市第九十八中学2018届九年级下学期第一次模拟考试数学试题湖北省武汉市四校联考2018届九年级中考模拟试卷(3月份)数学试题湖北省潜江市老新中学2018届中考模拟题数学试卷【全国区级联考】湖北省武汉市硚口区2018届中考数学模拟试卷(二)江西省乐安县第一中学2017-2018学年七年级下学期第二次月考数学试题2020年福建省莆田市仙游县九年级中考冲刺卷(二)数学试题2021年江苏省淮安市中考数学模拟试卷(一) 2023年江苏省淮安市淮阴区中考一模数学试题2023年江苏省淮安市淮阴区中考模拟(三)数学模拟预测题山东省临沭县青云镇中心中学2017-2018学年八年级上学期期中考试数学试题山东省临沂市临沭县2017-2018学年八年级上学期期中教学质量检测数学试题山东省临沂市沂水县2017-2018学年八年级上学期期中考试数学试题山东省临沂市沂水县2017-2018学年八年级(上)期中数学试卷辽宁省大石桥市水源镇九年一贯制学校2017-2018学年八年级上学期期末考试数学试题2017-2018学年北师大版七年级数学下册 期末测评2江苏省宜兴市环科园联盟2018-2019学年八年级上学期第一次月考数学试题【区级联考】湖北省武汉市洪山区2017-2018学年八年级上学期期中考试数学试题江苏省淮安市朱坝中学2018-2019学年八年级上学期第一次月考数学试题【校级联考】河南省南阳市南召县2017-2018学年八年级(上)期末数学试题贵州省遵义市桐梓四中2018-2019学年八年级(上)期中数学试题山东省东营市河口区义和镇中心学校2018-2019学年七年级(五四制)上学期第一次月考数学试题江苏省无锡市江阴市南闸实验学校2019-2020学年八年级上学期10月月考数学试题河南省驻马店市新蔡县2019-2020学年八年级上学期期中数学试题浙江省宁波市余姚市2017-2018学年八年级上学期期末数学试题陕西省汉中市宁强县2018-2019学年八年级上学期期末数学试题1陕西省汉中市宁强县2018-2019学年八年级上学期期末数学试题2江苏省无锡市新吴区第一实验学校2020-2021学年八年级9月阶段检测试数学试题江苏省镇江实验学校2019-2020学年八年级上学期第一次阶段数学试题山东省临沂市临沭县第四初级中学2020-2021学年八年级上学期第一次月考数学试题江苏省无锡市南闸中学2020-2021学年八年级上学期第一次月考数学试题四川省巴中市平昌县2019-2020学年七年级下学期期末考试数学(北师大版)试题江苏省盐城市东台市二盟2021-2022学年八年级上学期10月月考数学试题河南省濮阳市油田四校联考2021-2022学年七年级上学期期中数学试题湖北省武汉市汉阳区晴川初级中学2021-2022学年八年级上学期质检数学试卷(10月份) 湖北省随州市曾都区洛阳镇中心学校2022-2023学年八年级上学期第一次阶段性测试数学试题山东省乐陵市朱集镇三间堂中学2022-2023学年八年级上学期第一次月考数学试题山东省滨州市阳信县实验中学2022-2023学年八年级上学期10月月考数学试题湖南省衡阳师范学院祁东附属中学2022-2023学年八年级上学期期中考试数学试题福建省厦门市2022-2023学年八年级上学期10月数学质检试卷安徽省黄山市徽州区第二中学2022-2023学年八年级上学期第一次月考数学试题山东省滨州市阳信县第二实验中学2022-2023学年八年级上学期第一次学习力监测数学试题湖北省武汉市洪山区和平中学2022-2023学年八年级上学期期末考试数学试卷(已下线)第09讲 与全等三角形有关的计算和角的证明与计算-【暑假自学课】2023年新八年级数学暑假精品课(人教版)山西省大同市平城区 第十二中学校2022-2023学年八年级上学期11月月考数学试题河南省驻马店市西平县人和中学2023-2024学年八年级上学期9月月考数学试题福建省厦门双十中学2023-2024学年八年级上学期第一次月考数学试题山东省德州市宁津县苗场中学2023-2024学年八年级上学期10月月考数学试题山东省聊城市冠县2023-2024学年八年级上学期期中数学试题新疆维吾尔自治区省石河子市石河子第十三中学2023-2024学年八年级上学期12月月考数学试题湖北省天门外国语学校2023-2024学年八年级上学期期中数学试题山东省济宁市邹城市张庄中学2023-2024学年八年级上学期12月月考数学试题广东省广州市白云区白云实验学校(白云省实)2023-2024学年七年级上学期期中模拟数学试题
4 . 矩形
的边长
,点
在
上,把
沿
折叠,使点
落在
边的点
处,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/52150711-9dcc-4edd-9755-91df11a9678a.png?resizew=310)
(1)如图1,求
的长度;
(2)如图2,点
从点
出发沿
以每秒
的速度向点
运动,同时点
从点
出发沿
以每秒
的速度向点
运动,运动时间为
秒
,过点
作
,于点
.
①请证明在
、
运动的过程中,四边形
是平行四边形;
②连接
,当
为何值时,
为直角三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685181c8a71e73d8b7ca45e4a9d29466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa485cf3776f36aaf4abaadaf30fb85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d16acfe0374d54b1ed057113bbc22da1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/52150711-9dcc-4edd-9755-91df11a9678a.png?resizew=310)
(1)如图1,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faee0268e5ede6318697e5a8509dd6f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9568e24f4e1f3efea3b74066cc8b508d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5992036c739557714bc05e08a93bdd3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ea614a36e86826d3705692a11bd069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e8db30fe8ec9b2c997cf05b4223ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①请证明在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce2366b5e1d873347b730aab1137e74.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582b8f63e72b0d2785a48a8467f8ae9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86755a02b5ed2904435875b84ca2da3.png)
您最近一年使用:0次
5 . 已知菱形
中,
,点P为菱形内部或边上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/f7b3c211-6f20-484e-bc52-a2d726db169d.png?resizew=679)
(1)如图1,若点P在对角线
上运动,以
为边向右侧作等边
,点E在菱形
内部或边上,连接
,直接写出
与
的数量关系; ;
(2)如图2,若点P在对角线
上运动,以
为边向右侧作等边
,点E在菱形
的外部,试写出线段
,
,
之间的数量关系,并说明理由;
(3)如图3,若
,点E,F分别在
,
上,且
,连接
,
.已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/f7b3c211-6f20-484e-bc52-a2d726db169d.png?resizew=679)
(1)如图1,若点P在对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
![](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/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)如图2,若点P在对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15b82151bff7cc0238d2034a6129f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594bc35dbb72ec279107fb861a9a3c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bf929a1b77096d9daaec5ff593ca64.png)
您最近一年使用:0次
6 . 在
中,
,点D是直线
上动点,连接
,在直线
的右侧作等边
,连接
,当线段
的长度最小时,线段
的长度为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059a25e050ffe28a781bdafae973efdc.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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2023-12-10更新
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92次组卷
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2卷引用:江西省景德镇市十校联考2022-2023学年九年级上学期期中数学试题
7 . 通过类比联想,引申拓展研究典型题目,可达到解一题知一类的目的,下面是一个案例,请补充完整.
原题:如图①,点E,F分别在正方形
的边
,
上,
,连接
,试猜想
,
,
之间的数量关系.
(1)【思路梳理】把
绕点A逆时针旋转
至
,可使
与
重合,由
,得
,即点F,D,G共线,易证
__________,故
,
,
之间的数量关系为__________.
(2)【类比引申】
如图②,点E,F分别在正方形
的边
,
的延长线上,
.连接
,试猜想
,
,
之间的数量关系,并证明.
原题:如图①,点E,F分别在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/ae33a4a8-ed60-4dfe-9d67-227e311dc87f.png?resizew=243)
(1)【思路梳理】把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbd6f0a0412d0f43ce1f7c1d530e56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5406da6da56fab36d73d59cdb6237fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b786297e18a79a55cfb976a1435ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1df2d8b9e0994aa9f1a6a9b382519f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)【类比引申】
如图②,点E,F分别在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
您最近一年使用:0次
8 . 如图,在
中,点E在
边上,
,将线段
绕A点旋转到
的位置,使得
,连接
,
与
交于点G.
(1)求证:
;
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2b3d993a79210952ef190542700111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/16/29d0a8ee-712f-424d-8326-2f6c89b4767b.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da8fe8f5f8a3f17561d70652ad1172a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a858e3fda1505e5aede22f4d6edd3f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d543ed53e8e7a7e0c7391f8bf20e83da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec88884321733714de9db5466629ccf2.png)
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9 . 如图,在
中,
,
,M是边
上的一个动点(不与点B.C重合),连接
,将线段
绕点A逆时针旋转
得到
,连接
交
于点P,连接
.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f426e2e011a9797acbdf5889be2407d.png)
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc48c4b4c953d02eaa1dde683cee9687.png)
(3)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4cb4069a2e1e90d1a9c4979ad09ca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb85aa4871eb1dfb392613d429a9314.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/f8c2376c-ee3d-4207-aeef-699ca7925dd4.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f426e2e011a9797acbdf5889be2407d.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc48c4b4c953d02eaa1dde683cee9687.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c5ba735c7c726f10f3f9cdc34121f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
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10 . 【课本再现】
(1)如图1,
,
都是等边三角形,连接
,
,其中与
全等的三角形是______.
【类比迁移】
(2)如图2,在菱形
中,
,点E,F分别在边
,
上,且
.
①求证:
.
②若
,点E在
边上从点B向点C运动,设
,
,求y与x的函数关系式.
【拓展运用】
(3)如图3,在四边形
中,
,
,
,
,
是
的平分线,求
的长.
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80651f797ab9dccfd7163c605b091ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f63756fe9251e65cc14e1ce9723d4.png)
【类比迁移】
(2)如图2,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de6ef5f095183ab6dbf5ee8c11bfd35.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a893fc8b2e9d55c9cdf8aceb3827a0.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c29bf5a05dd46f6e03dfd22c32f7ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8336a1e451ac405333cf72c5a1a5e283.png)
【拓展运用】
(3)如图3,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8b709a173120436dac669c74b927d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ed75e65e7374c38ffb1f75259a8beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/b8c316c5-e821-4d17-83d1-29a5427e583b.png?resizew=505)
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