1 . 如图,在平行四边形
中,用直尺和圆规作
的平分线
交
于点E,若
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.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/e4267c178771ea6ddccecd9f9128d3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/319f6037-557d-4997-b9a8-12f25fcebe8c.png?resizew=150)
A.6 | B.8 | C.9 | D.10 |
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2 . 如图,点
在等边三角形
的边
上,点
在
的延长线上,
,交
于点
,
.
(1)求证:
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8daff96303a07819bd4ee47731e73b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/458f98e7078cb3259c18542be9749feb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/5/bff5e9f9-81b1-49ec-9b69-d418144bdef2.png?resizew=172)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42218a68301d770accaaefb96b19f8a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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2023-09-11更新
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2卷引用:安徽省池州市2022-2023学年八年级下学期开学考试数学试题
名校
3 . 如图,在四边形
中,
,点E是
的中点,
平分
.求证:
是
的平分线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](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/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/22/68656c3f-b6c5-41b8-9017-173b6b73c2c6.png?resizew=129)
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2023-08-17更新
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5卷引用:安徽省合肥市中国科技大学附属中学2022-2023学年八年级下学期开学考试数学试卷
安徽省合肥市中国科技大学附属中学2022-2023学年八年级下学期开学考试数学试卷(已下线)第04讲 角平分线的判定与性质(知识解读+真题演练+课后巩固)-2023-2024学年八年级数学上册《知识解读·题型专练》(苏科版)(已下线)第06讲 角平分线的判定与性质(知识解读+真题演练+课后巩固)-2023-2024学年八年级数学上册《知识解读·题型专练》(浙教版)(已下线)第05讲 三角形全等的判定(12类题型)-【帮课堂】2023-2024学年八年级数学上册同步学与练(浙教版)山东省日照市日照第二中学2021-2022学年八年级上学期期末数学试题
4 . 在
中,
,将
绕点B顺时针旋转
,得到
,连接
、
,射线
交
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/14/c9d63ddc-0a3d-4b86-b76b-24dfa8bcf54a.png?resizew=353)
(1)如图1,当
时:①
的度数是 ;②求证:点F为
的中点;
(2)当
时,(1)中②的结论还成立吗?若成立,请仅就图)中的情形进行证明;若不成立,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70fb076c97adfcbc0379f371ea1f429a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d2a15061b3f15f299a1c9c1ba66084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/14/c9d63ddc-0a3d-4b86-b76b-24dfa8bcf54a.png?resizew=353)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/449d9e1077ec791367d36557259fbece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f684691d325611ebafa7954b009bc128.png)
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5卷引用:安徽省合肥一六八新桥学校2022--2023学年九年级下学期开学考试数学试题
5 . 如图,点A在x轴的负半轴上,点C在反比例函数
的图象上,
交y轴于点B,若点B是
的中点,
的面积为
,则k的值为 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
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2023-03-16更新
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18卷引用:安徽省宿州市萧县城东初级中学2022-2023学年九年级下学期开学考试数学试题
安徽省宿州市萧县城东初级中学2022-2023学年九年级下学期开学考试数学试题安徽省合肥市长丰县北城世纪城初级中学2022~2023学年九年级上学期期末数学试题安徽省池州市贵池区2022-2023学年九年级上学期期末质量检测2023年安徽省合肥市瑶海区新站实验中学中考数学调研试卷(1)2023年安徽省芜湖市无为市中考二模数学试题2023年安徽省芜湖市中考一模数学试题(已下线)专题16反比例函数2022年安徽省合肥市长丰县吴店中学中考数学一模试卷(已下线)专题11.1 反比例函数 重难点题型12个-2022-2023学年八年级数学下册重难题型全归纳及技巧提升专项精练(苏科版)内蒙古自治区乌兰察布市第三中学2023-2024学年九年级上学期期末数学试题广东省深圳市龙岗区百合外国语学校2023-2024学年九年级下学期开学考试数学试题(已下线)热点03一次函数与反比例函数2(8种考向+重难通关练+培优争分练)-2024年中考数学【热点·重点·难点】专练(安徽专用)2022年广东省深圳市福田区九年级教学质量检测(二模)数学试题(已下线)专题28 已知面积求k小题-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(北师大版)2022年广东省深圳市龙华区民治中学九年级数学一模试卷广东省深圳实验学校2022-2023学年九年级上学期期末数学试题2024年山西省晋中市昔阳县中考一模数学试题2024年广东省深圳市龙岗区平安里学校中考一模数学试题
名校
6 . 如图,
,
,
,点N在线段
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/a66c7352-f0bd-4a82-bf2b-9b6a43419156.png?resizew=151)
(1)求证:
;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0924ce860bafcd7f78b87d6a42f48f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ab1ed974720833129aede2ef31643c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/a66c7352-f0bd-4a82-bf2b-9b6a43419156.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1735543d7a5dcbedff4f7a54276bf7d5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc3ef6a72ecee9efdca1f447fa243d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274e29821dd4630a7182573b7c654f1f.png)
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2023-01-09更新
|
240次组卷
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2卷引用:安徽省合肥市中国科技大学附属中学2022-2023学年八年级下学期开学考试数学试卷
7 . (1)证明角平分线具有的性质:角平分线上的点到角的两边的距离相等.为了更直观、清楚地表达题意,我们通常在证明之前画出图形,并用符号表示已知和求证.如图1,已知:
平分
,点
在
上,
,
,垂足分别为
,
.求证:
.
(2)如图2,在
中,
平分
,交
于点
,
于点
,
于点
,
,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3224457d394d71df7d2955be6149dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70aa83794b41e477e7b546ecbe435ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374e2198b495b86b0f8308d28035a3db.png)
(2)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3224457d394d71df7d2955be6149dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70aa83794b41e477e7b546ecbe435ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b890ec052726349f230803ae1c052d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0328dbe259bbc4af4c897d16ee6e504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/ef9e803c-d84c-4403-8362-62d2f530ad9b.png?resizew=344)
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2023-01-03更新
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4卷引用:安徽省滁州市定远县育才学校2022-2023学年八年级下学期开学考试数学试题
8 . 如图,在
中,AC是对角线,
,垂足分别为点E,F,连接BE,DF.
![](https://img.xkw.com/dksih/QBM/2022/6/27/3010441445990400/3049947257864192/STEM/1f94a1079ab14aa89c5ab78619a7a301.png?resizew=202)
(1)求证:四边形DEBF是平行四边形.
(2)若
,求CD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaa063d2e7c4585a021929c6fa8505a.png)
![](https://img.xkw.com/dksih/QBM/2022/6/27/3010441445990400/3049947257864192/STEM/1f94a1079ab14aa89c5ab78619a7a301.png?resizew=202)
(1)求证:四边形DEBF是平行四边形.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1906aed9d0b48753d2763e08d763db6a.png)
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2022-08-22更新
|
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3卷引用:安徽省宣城市奋飞学校2022-2023学年九年级上学期开学考试数学试题
9 . 如图,在平面直角坐标系中,
,直线l经过点
且与x轴平行,
是直线l上一动点
,以AD为边向右作正方形ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/25/02764562-a765-4a52-936e-1f5f4c5abf4d.png?resizew=186)
(1)点C的坐标是_____ (用含m的式子表示).
(2)当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c4f9bdae1190d17d572603937a63aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff48d10ca3e56fd07d483306c8033db0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a785771e81111d597b324b579314ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bba02d90f562d1f71794a56e098a366.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/25/02764562-a765-4a52-936e-1f5f4c5abf4d.png?resizew=186)
(1)点C的坐标是
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b32167424064511aa8224c78e06e94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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2022-08-22更新
|
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6卷引用:安徽省宣城市奋飞学校2022-2023学年九年级上学期开学考试数学试题
安徽省宣城市奋飞学校2022-2023学年九年级上学期开学考试数学试题安徽省安庆市桐城市2021-2022学年八年级下学期期末数学试题(已下线)专题9.23 正方形(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(苏科版)(已下线)专题18.37 正方形(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)(已下线)专题5.12 正方形(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(浙教版)(已下线)专题18.24 正方形(分层练习)(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)
名校
10 . 如图,在△ABC中,AB=AC,D、A、E三点都在直线m上,并且有∠BDA=∠AEC=∠BAC=α,若DE=10,BD=3,求CE的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/11f100af-4e01-4274-acf6-818372f643af.png?resizew=195)
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2022-07-20更新
|
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6卷引用:安徽省合肥市中国科技大学附属中学2022-2023学年八年级下学期开学考试数学试卷
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