如图,菱形
中,点E,F分别在边
上,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8844176a6462ea3849d035d3779bc155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c581dab991aeadf06d972e47673ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
2023·福建三明·一模 查看更多[20]
2023年福建省三明市九年级下学期第一次教学质量监测数学试卷福建省三明市2022-2023学年九年级上学期第一次教学质量监测数学试卷陕西省西安市2022—2023学年九年级下学期第一次质量监测数学试卷(已下线)专题 18.57 平行四边形(全章复习与巩固)(知识讲解)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)2023年山东省济南市历城区中考二模数学试题(已下线)数学(预测新题型、济南卷)-学易金卷:2023年中考第一次模拟考试卷(已下线)黄金卷03-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(长沙专用)2023年安徽省安庆市九校联盟九年级第一次月考数学试卷2023年江苏省苏州市吴中、吴江、相城中考二模数学试题(已下线)专题06 与全等三角形有关的证明计算-学易金卷:2023年中考数学一模试题分项汇编(全国通用)江苏省苏州市吴中、吴江、相城区2022~2023学年下学期中考数学模拟(二模)试题福建省厦门市蔡塘学校2023-2024学年级九年级上学期月考数学试题2024年山东省济南市钢城区九年级中考一模数学模拟试题2024年山东省济南市东南片区九年级中考一模数学模拟试题山东省济南市历城区2023-2024学年九年级下学期3月月考数学试题2024年山东省济南市历城区中考数学质检模拟预测题(3月份)2024年山东省济南市市中区中考一模数学模拟试题福建省厦门市滨湖中学2023-2024学年九年级下学期期中数学试题2024年山东省济南市钢城区部分校中考数学一模试题2024年陕西省西安市高新逸翠园初级中学中考十五模数学试题
更新时间:2023-05-01 09:52:26
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相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,垂足为D,
,延长
至E.使得
,连接AE.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/ec8e99b2-05bb-49fa-8118-83f659f7c845.png?resizew=172)
(1)求证:
.
(2)若
,
,
①求
的面积.
②求
的周长,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03ca3e334c5290ab28b4b4a883c90c8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/ec8e99b2-05bb-49fa-8118-83f659f7c845.png?resizew=172)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84436aa1ceaa333f6236c35b6eb63ec0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】在菱形
中,
,点
是射线
上一动点,以
为边向右侧作等边
,点
的位置随着点
的位置变化而变化.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/0074d735-7048-4f19-b624-2003fab5f230.png?resizew=610)
(1)问题发现如图
,当点
在菱形
内部或边上时,连接
,
与
的数量关系是______;
与
的位置关系是______;
(2)拓展探究
如图
,当点
在菱形
外部时,(1)中的结论是否还成立?若成立,请予以证明;若不成立,请说明理由;
(3)解决问题
如图
,若
,
,请直接写出四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/0074d735-7048-4f19-b624-2003fab5f230.png?resizew=610)
(1)问题发现如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)拓展探究
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)解决问题
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638d9cccb679214718224c3088ed4a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】已知
中,
,
为
边上一点,
为
上一点,
,设
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f42f91374a53df6fcf8758a3450526.png)
(1)若
,
,则
__________;
__________;若
,
,则
__________;
__________;
(2)由此猜想
与
的关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224efa375375f1ac848b0c15ee51aebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f42f91374a53df6fcf8758a3450526.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e61f60392c2674c98d16bff77a3f753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ca3f0a4b2d06539e74594736881aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0434c0177ca5c88ec129bd4cc13f4a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c57bf84b9d2fe29a0b869b4d5ee57f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ca3f0a4b2d06539e74594736881aaa.png)
(2)由此猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://img.xkw.com/dksih/QBM/2019/8/2/2260140360900608/2260194920914944/STEM/5f01bb304fd94020916f9e9bb3307ffc.png?resizew=130)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在四边形
中,
,
,
且
.
.
(2)若
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357d9412cb6b277a3e317d99135ab64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4d00b86b2f067b902baf6e52f0faab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】求作一个菱形
,使如图所示的
是菱形
的一个内角,且对角线
.(请用直尺和圆规作图,保留作图痕迹,不写作法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3d296e0d7154a170cb7d3ae42989b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/cf934797-0f35-4d66-a4b6-6fd93b815c2c.jpg?resizew=335)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在菱形
中,对角线
,
相交于点
,过点
作
,过点
作
,
与
相交于点
.
(1)求证:四边形
是矩形;
(2)若
,
,求四边形
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3275b04cb57af1d26fe2562cc4daa445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99399ce175a0f5d0a7a6a82d81b6af7f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0763b031b7e6b6d87ce3554ac482d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99399ce175a0f5d0a7a6a82d81b6af7f.png)
您最近一年使用:0次