名校
1 . 如图,在平行四边形
中,对角线
与
相交于点O,
是等边三角形,
,求平行四边形
的面积.
![](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/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2023-03-08更新
|
465次组卷
|
14卷引用:新疆吐鲁番市高昌区城区五校联盟2021-2022学年八年级下学期期中考试数学试题
新疆吐鲁番市高昌区城区五校联盟2021-2022学年八年级下学期期中考试数学试题福建省龙岩市新罗区2021-2022学年八年级下学期期中数学试题江西省吉安市吉安县2020-2021学年九年级上学期期末数学试题(已下线)第二十二章 四边形【专项训练】-2020-2021学年八年级数学下学期期末专项复习 (沪教版)广东省广州市越秀区培正中学2020-2021学年八年级下学期期中数学试题(已下线)【人教版课时练习】八年级下册数学第18章平行四边形 18.2.1 矩形(已下线)【北师大版课时练习】九年级数学上册第一章 特殊平行四边形 2 矩形的性质与判定辽宁省沈阳市铁西区培英中学2021-2022学年九年级上学期10月月考数学试题陕西省咸阳市泾阳县2022-2023学年九年级下学期第一次质量检测(上期末)数学试题(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)第一章 特殊平行四边形 2 矩形的性质与判定九年级上册课本例题陕西省宝鸡市凤翔区2023-2024学年九年级上学期期中数学试题新疆维吾尔自治区吐鲁番市2023-2024学年八年级下学期期中数学试题云南省昆明市石林彝族自治县鹿阜中学2023-2024学年八年级下学期期中数学试题
2 . 如图,在四边形
中
,
,
于点
,若四边形
的面积是
,则
的长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/41f7d6be-a372-49b1-9a5b-3b8f118bed5d.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b802b67ff805001ac88a6c85a795c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824938c27f63ba9b36eaea6cdd389e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/41f7d6be-a372-49b1-9a5b-3b8f118bed5d.png?resizew=173)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 如图.,在
中,对角线
、
相交于点O,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://img.xkw.com/dksih/QBM/2023/2/8/3170494424358912/3171142254313472/STEM/2aa0b66812614721a34af01e38def544.png?resizew=201)
(1)求证:
;
(2)若点E、F分别为线段
、
的中点,连接
,
,
,求
的长及四边形
的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.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/45acdbac251ca6b76a166c1242e71df9.png)
![](https://img.xkw.com/dksih/QBM/2023/2/8/3170494424358912/3171142254313472/STEM/2aa0b66812614721a34af01e38def544.png?resizew=201)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
(2)若点E、F分别为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1821a3ed623c2d1e59d82b39b4699092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2023-02-09更新
|
421次组卷
|
3卷引用:湖南省长沙市雅礼集团2022-2023学年九年级上学期期末考试数学试题
湖南省长沙市雅礼集团2022-2023学年九年级上学期期末考试数学试题湖南省长沙市雅礼教育集团2022-2023学年九年级上学期期末考试数学试卷(已下线)(培优特训)专项18.1 平行四边形综合高分必刷-2022-2023学年八年级数学下册《同步考点解读·专题训练》(人教版)
4 . 已知矩形
,点
在
边上,
,连接
,点
在
边上,连接
,
平分
,若
,
,
,则
的面积是___________ .
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04365928b0555e4dc2a6e30818c7c84f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482e68d608de7675e15bb759acd8204c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537d023f2667b1cd0991bc78f7bd18f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26584ad0ecd2f3985faf02d297f1b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3aecd0dcb9aab7597330e81cd44c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://img.xkw.com/dksih/QBM/2023/1/25/3160467263750144/3171040990060544/STEM/8326ad736fff46d69232ed199131f2de.png?resizew=116)
您最近一年使用:0次
2023-02-09更新
|
303次组卷
|
5卷引用:黑龙江省哈尔滨市南岗区松雷中学2021-2022学年九年级下学期模拟测试(二)数学(五四制)试卷
黑龙江省哈尔滨市南岗区松雷中学2021-2022学年九年级下学期模拟测试(二)数学(五四制)试卷(已下线)18.2.1 矩形(含2个课时)(练习)-2022-2023学年八年级数学下册同步精品课堂(人教版)(已下线)第18章 平行四边形 单元综合检测(难点)(练习)-2022-2023学年八年级数学下册同步精品课堂(人教版)(已下线)22.3.1.2 矩形的判定-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(沪教版)(已下线)第04讲 矩形的判定、判定与性质综合-【暑假自学课】2023年新九年级数学暑假精品课(北师大版)
5 . 在下面
的网格中,按以下要求画出四边形,使四边形的顶点落在格点上,边不能在网线上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/30cf87a8-1aa6-4cc6-be0e-e596a5e1985a.png?resizew=312)
(1)在图1中,画出面积为4的菱形(非正方形);
(2)在图2中,画出面积为6的矩形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954253b16a82489bb0e152543428c68a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/30cf87a8-1aa6-4cc6-be0e-e596a5e1985a.png?resizew=312)
(1)在图1中,画出面积为4的菱形(非正方形);
(2)在图2中,画出面积为6的矩形.
您最近一年使用:0次
6 . 问题提出:
我们知道菱形的面积不仅可以用底乘以高来求,而且知道菱形的面积等于对角线乘积的一半.那么我们日常生活中常见的风筝的形状即“筝形”是不是也可以用这种方法求面积呢?
如图1,四边形
是我们常见的风筝的图案,其中对角线
长为
,
长为
,
垂直平分
,垂足为E,求:筝形
的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/be8e05e1-9f62-436f-94be-1132435b85cc.png?resizew=767)
解析:由已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d67b6430a35f804b596096236d78ad.png)
我们发现这个结论对于筝形依然成立.
类比探究:
满足什么条件的图形可以通过这种方法求面积呢?让我们先研究下面图形的面积:
如图2,四边形
的对角线
、
互相垂直,其中对角线
长为
,
长为
,垂足为E,求四边形
的面积.(请写出求解过程)
由此,我们可以得出一个结论:
结论1:对角线互相垂直的四边形的面积等于______________________.
拓展提高:
由上述的结论1给我们的启示:对于两条对角线不垂直的四边形的面积如何求解呢?下面让我们一起来研究
如图3所示四边形
的对角线
长为
,点A到
的距离与点C到
的距离之和为
,求四边形
的面积.(请写出求解过程)
结论2:任意四边形的面积等于______________________.
问题解决:
(1)如图4,矩形
中,
,
,
,点G、H分别是
、
上任一点,则四边形
的面积等于________
.
(2)如图5,四边形
放在了一组平行线中,已知
,四边形
的面积为
,则两条平行线间的距离为_______
.
我们知道菱形的面积不仅可以用底乘以高来求,而且知道菱形的面积等于对角线乘积的一半.那么我们日常生活中常见的风筝的形状即“筝形”是不是也可以用这种方法求面积呢?
如图1,四边形
![](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/8e476067ee83f0666b74ef0576567c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cacebfac933f2d9894147286bdd4a9.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/be8e05e1-9f62-436f-94be-1132435b85cc.png?resizew=767)
解析:由已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d67b6430a35f804b596096236d78ad.png)
我们发现这个结论对于筝形依然成立.
类比探究:
满足什么条件的图形可以通过这种方法求面积呢?让我们先研究下面图形的面积:
如图2,四边形
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cacebfac933f2d9894147286bdd4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7fe3005afef489db48566e2acfc9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
由此,我们可以得出一个结论:
结论1:对角线互相垂直的四边形的面积等于______________________.
拓展提高:
由上述的结论1给我们的启示:对于两条对角线不垂直的四边形的面积如何求解呢?下面让我们一起来研究
如图3所示四边形
![](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/86cacebfac933f2d9894147286bdd4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7fe3005afef489db48566e2acfc9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
结论2:任意四边形的面积等于______________________.
问题解决:
(1)如图4,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d291cfc6c4677d20f8674c57322b46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d354155f71a1736c1c9186168695edd.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/1522a9c3b2466395570c2689a4055584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
(2)如图5,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f71a52438196c3aca604fa927be8e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2c7aaa24c251b10f1c7a0dce744602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
您最近一年使用:0次
7 . 如图所示,在矩形
中,E,F,G,H分别为边
,
,
,
的中点,若
,
,则四边形
的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/0114bf4a-3727-40a1-a991-0ca22d18d346.png?resizew=178)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc3dcc4325297dac77a92c0682a6cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee5bd6f04872ef8d3d833d0e2056161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/0114bf4a-3727-40a1-a991-0ca22d18d346.png?resizew=178)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 如图,在
中,
,
,
,
是边
的中线.动点
从点
出发,以每秒
个单位长度的速度沿折线
向终点
运动.过点
作
于点
,以
为边作矩形
,使点
、
始终在
的异侧,且
.设矩形
与
重叠部分图形的面积是
,点
的运动时间为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26149dab1e7059bd5df35a0e8bc112b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/7b94f031-67af-4019-9b5e-1e4ac6bfd2ee.png?resizew=163)
(1)当点
在边
上时,用含
的代数式表示
的长;
(2)当点
落在边
上时,求
的值;
(3)求
与
之间的函数关系式;
(4)连结
,当直线
将矩形
分成面积比为
的两部分时,直接写出
的值.
![](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/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9c94bf0b38a66418e2b88c80245c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b154270249b0ef54ddb26137b2681a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356554117436d032646a546817584345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26149dab1e7059bd5df35a0e8bc112b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/7b94f031-67af-4019-9b5e-1e4ac6bfd2ee.png?resizew=163)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(4)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
9 . 如图,在四边形
中,
,
,对角线
交于点O,
平分
,过点C作
交
延长线于点E,连接
.
是菱形;
(2)若
,
,求四边形ABCD的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb32dae6823f572ffa028d684733c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e44d7372864cc7cf8c6396458771f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
您最近一年使用:0次
2023-01-23更新
|
665次组卷
|
15卷引用: 陕西省西安市新城区爱知中学2021-2022学年八年级下学期期末数学试卷
陕西省西安市新城区爱知中学2021-2022学年八年级下学期期末数学试卷 辽宁省本溪市第十二中学2022-2023学年九年级上学期第一次作业质量检测数学试题陕西省汉中市第四中学2022-2023学年九年级上学期 数学第一次月考试题湖南省长沙市立信中学2022-2023学年九年级上学期期末考试数学试题贵州省2022-2023学年九年级上学期阶段性练习题数学试卷(一)湖南省长沙市湖南师大附中梅溪湖中学2022-2023学年九年级上学期开学考试数学试题(已下线)18.2.2 菱形-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(人教版)(已下线)黄金卷02-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(江苏徐州专用)(已下线)黄金卷7-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(北京专用)(已下线)(培优特训)专项5.1 菱形综合高分必刷题-2022-2023学年八年级数学下册《同步考点解读·专题训练》(浙教版)黑龙江省大庆市肇源县2022-2023学年八年级下学期7月期末数学试题山东省淄博市高青县2022-2023学年八年级下学期期中数学试题2023年云南省大理州祥云县中考数学模拟预测题(已下线)人教版八下期中真题精选(常考60题18个考点分类专练)-2023-2024学年八年级数学下学期期中考点大串讲(人教版)河北省保定市爱和城2023-2024学年八年级下学期月考数学试题
20-21八年级下·浙江·期末
名校
解题方法
10 . 如图所示,
是一个边长为4的等边三角形,D是直线
上一点,以
为边作
,使
,
,并以
、
为边作平行四边形
.
上时,
交
于点G,求证:
;
(2)求线段
的最小值: .
(3)当直线
与
的一边垂直时,请直接写出
的面积.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e50e094cd2849e38859b36aad0b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1b8d111d101afbbf301a2c56c6d15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7cf29832b8b1feacc1849577cc3e87.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
(3)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17726e73b10e46116b4091465b57b14a.png)
您最近一年使用:0次
2023-01-16更新
|
359次组卷
|
7卷引用:四川省绵阳市游仙区绵阳中学英才学校2021-2022学年八年级下学期期中数学试题
四川省绵阳市游仙区绵阳中学英才学校2021-2022学年八年级下学期期中数学试题(已下线)【新东方】 初中数学20210622-032【初二下】浙江省杭州市十三中教育集团(总校)2020-2021学年八年级下学期期中数学试题(已下线)专题18.26 矩形(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)(已下线)专题5.1 矩形(知识讲解)-2022-2023学年八年级数学下册基础知识专项讲练(浙教版)浙江省杭州市滨江区杭州西兴中学2022-2023学年八年级下学期期中数学试题浙江省杭州市余杭区育海外国语学校2023-2024学年八年级下学期第一次月考数学试卷