1 . 如图,点
是菱形
对角线的交点,过点
作
,过点
作
,
与
相交于点
.
是矩形.
(2)若
,
,求矩形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2781d7855f9a067c22213834fc1b91.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a6e2ab0a2c893dc495df33e5ee092d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a6e2ab0a2c893dc495df33e5ee092d.png)
您最近一年使用:0次
2 . 如图,D是
内部一点,
,且
,依次取
,
,
,
的中点,并顺次连接得到四边形
,则四边形
的面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5311c65bd5fab4cd8c16016f8d9413.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/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
A.12 | B.![]() | C.24 | D.48 |
您最近一年使用:0次
3 . 将两张全等的等腰直角三角形纸片
与
和一张正方形纸片
按照如图所示的方式拼成一个平行四边形
,同时形成了剩余部分(即
,
,
,
),若只知道阴影部分的面积,则不能直接求出( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370abdf35cb8817d35b78eea892731ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff00441c41fc516c37876d266fcbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b058127bcbfeb831be0f45ee34554066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000bdb210e2adcc4b5d45542a58e612f.png)
A.![]() |
B.![]() |
C.平行四边形![]() |
D.剩余部分的面积之和与正方形![]() |
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2024-03-22更新
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6卷引用:山东省威海市威海经济技术开发区2023-2024学年八年级下学期5月期中数学试题
山东省威海市威海经济技术开发区2023-2024学年八年级下学期5月期中数学试题2024年浙江省G3联盟第二次联考初中毕业升学学业水平文化模拟考试数学模拟预测题(已下线)专题07+平行四边形与特殊平行四边形2(5大易错点分析)-备战2024年中考数学考试易错题(浙江专用)2024年浙江省G3联盟中考数学第二次联考模拟试题浙江省绍兴市柯桥区柯桥区秋瑾中学2023-2024学年九年级下学期4月月考数学试题(已下线)重难点03+平行四边形与特殊平行四边形(8大题型+满分技巧+限时分层检测2)-2024年中考数学【热点·重点·难点】专练(全国通用) - 副本
4 . 如图,点A是反比例函数
的图象上一点,
轴交x轴于点B,
,
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85410ff00c81839ff9a64bf86dc36f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f614a3aa0923fbbc1069de0e1d911a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f57c324fbcf0c2c9be1f1508a346e2f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/6e74d778-42f8-4383-9345-83532b3cd1a4.png?resizew=185)
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2023-11-16更新
|
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|
3卷引用:山东省烟台市招远市(五四制)2023-2024学年九年级上学期期中数学试题
名校
5 . 如图,矩形
的两条对角线相交于点
,
,
,若
,
,则四边形
的面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3275b04cb57af1d26fe2562cc4daa445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99399ce175a0f5d0a7a6a82d81b6af7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/27/743ac36a-5e01-43f8-8738-3cd0124a34b9.png?resizew=102)
A.24 | B.14 | C.48 | D.25 |
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2023-11-04更新
|
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2卷引用:山东省枣庄市滕州市滕州育才中学2023-2024学年九年级上学期期中数学复习试题
名校
6 . 如图,点
是反比例函数
图像上任意一点,过点
分别作
轴,
轴的垂线,垂足为
,
,则四边形
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85410ff00c81839ff9a64bf86dc36f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5241e0e07a9cd48e4f853405dca1a03.png)
A.1.5 | B.3 | C.6 | D.9 |
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|
283次组卷
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7卷引用:山东省淄博市沂源县2023-2024学年九年级上学期期中数学试题
7 . 如图,在矩形
中,
,
是边
上两点(
),
,
是边
上两点,且
,连接
,
,
,
.若
,
,
,则阴影部分的面积为_________ .
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b513ec4e9986ce124471bfc94d9cf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81d732cb6639b6e689e16e2d4dccfc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d72883fd2f01456de0bcc0f9d95202.png)
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2023-04-01更新
|
250次组卷
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4卷引用:山东省济宁市任城区2023-2024学年八年级下学期期中数学试题
山东省济宁市任城区2023-2024学年八年级下学期期中数学试题浙江省温州市瓯海区瓯海区外国语学校2022-2023学年七年级下学期期中数学试题2023年浙江省温州市鹿城区九年级中考一模数学试题(已下线)专题08 四边形问题汇总-学易金卷:2023年中考数学一模试题分项汇编(浙江专用)
8 . 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
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)
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2023-01-23更新
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15卷引用: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
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贵州省2022-2023学年九年级上学期阶段性练习题数学试卷(一) 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(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
10 . 如图在矩形ABCD中,AB=3,AD=4,对角线AC,BD交于点O,过点O作BD的垂线交AD于点M,过点M作AC的垂线,垂足为点N,则MO+MN的值是______________ .
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