1 . 在如图的
网格中,每个小正方形的边长都为1.
(2)第(1)作的
的面积为______;
(3)在图2中,连接
,
,仅用无刻度的直尺作
的一条中位线
.(画图过程中起辅助作用的用虚线表示,画图结果用实线表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dde0704f1cbf18977df5b4799b4d83.png)
(2)第(1)作的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
(3)在图2中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2 . 如图,菱形
中,对角线相交于点
,点
是
中点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a903538428f3dea2713fe721ce4f4f.png)
______ .
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a903538428f3dea2713fe721ce4f4f.png)
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11-12八年级下·北京·期中
名校
3 . 如图,菱形
中,
、
分别是
、
的中点,若
,则菱形
的周长为__________ .
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2024-05-13更新
|
23次组卷
|
18卷引用:2013届浙江省绍兴县西藏民族中学九年级下第二次模拟考试数学卷
2013届浙江省绍兴县西藏民族中学九年级下第二次模拟考试数学卷(已下线)2011-2012学年北京三十一中八年级下学期期中考试数学试卷2014-2015学年北京师大附中八年级下学期期中考试数学卷山东省德州市庆云县2017-2018学年人教版八年级第二学期期末数学试卷四川省广安市第四中学校2018-2019学年八年级下学期期中数学试题山东省德州五中2019—2020学年八年级下学期第一次月考数学试题吉林省吉林市2017-2018学年八年级下学期期末数学试题新疆阿克苏地区阿依库勒镇中学2018-2019 学年八年级下学期第二次月考数学试题广东省珠海市香洲区九洲中学2019-2020学年八年级下学期期中数学试题广东省汕头市龙湖区龙湖实验中学2020-2021学年八年级下学期期中数学试题湖南省长沙市麓山实验中学2021-2022学年八年级下学期期末考试数学试卷湖南省长沙市麓山实验中学2021-2022学年八年级下学期期末考试数学试卷宁夏吴忠市第三中学2021-2022学年八年级下学期期中考试数学试题海南省省直辖县级行政单位昌江黎族自治县2021-2022学年八年级下学期期末数学试题2023年湖南省永州市冷水滩区永州市第十六中学中考二模数学试题2024年陕西省榆林市子洲县周家硷中学中考三模数学试题山东省德州市夏津县2023-2024学年八年级下学期期中数学试题山东省德州市夏津县第三中学2023-2024学年八年级下学期期中数学试题
名校
4 . 如图,菱形
的对角线
相交于点O,E,F分别是
边上的中点,连接
.若
,则菱形
的面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e545f31f7cc57a31843f5adfd02941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75bf4dd5cf059e04f60c7d94d0d082eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2024-05-13更新
|
93次组卷
|
5卷引用:专题02 菱形的性质和判定(四大类型)(题型专练)-2023-2024学年八年级数学下册《知识解读·题型专练》(浙教版)
(已下线)专题02 菱形的性质和判定(四大类型)(题型专练)-2023-2024学年八年级数学下册《知识解读·题型专练》(浙教版)2024学年四川省成都市实验外国语学校九年级下学期一诊数学模拟试题湖南省岳阳市岳阳县岳阳经济技术开发区长岭中学2023-2024学年八年级下学期期中数学试题(已下线)重难点04+平行四边形与特殊平行四边形(4考点8题型)2(已下线)专题03 特殊的平行四边形的判定与性质(9大题型+优选提升题)-备战2023-2024学年八年级数学下学期期末真题分类汇编(湖南专用)
5 . 如图,已知矩形
,延长
至点
,使得
,对角线
,
交于点
,连结
.
是平行四边形;
(2)若
,
,求
的长.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1ac3ab8d3ce5e61fd2f89761f80976.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b0b077bfd3700e78db35bea761ae29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8cc58ef27567f0ab06eb1012aec330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
2024-05-11更新
|
72次组卷
|
5卷引用:浙江省湖州市南浔区2020-2021学年八年级下学期期末数学试题
浙江省湖州市南浔区2020-2021学年八年级下学期期末数学试题浙江省绍兴市柯桥区联盟2022-2023学年八年级下学期期中数学试题湖南省张家界市慈利县2023-2024学年八年级下学期期中数学试题湖南省邵阳市新宁县期中联考2023-2024学年八年级下学期期中数学试题(已下线)专题03 特殊的平行四边形的判定与性质(9大题型+优选提升题)-备战2023-2024学年八年级数学下学期期末真题分类汇编(湖南专用)
6 . 定义:我们把对角线相等的四边形叫作伪矩形,对角线的交点称作伪矩形的中心.
(1)①写出一种你学过的伪矩形: .
②顺次连接伪矩形各边中点所得的四边形是 .
A.正方形 B.矩形 C.菱形 D.无法确定
(2)如图1,在伪矩形
中,
,
,
,求
的长.
中,
,
,
,
,求这个伪矩形的面积.
(1)①写出一种你学过的伪矩形: .
②顺次连接伪矩形各边中点所得的四边形是 .
A.正方形 B.矩形 C.菱形 D.无法确定
(2)如图1,在伪矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bbe4cdd2c154bd9a8073b0d4cecb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212bfbd5575772ca36d6fc3e7b246e49.png)
您最近一年使用:0次
2024-05-11更新
|
211次组卷
|
2卷引用:2024年浙江省浙里初中升学联考仿真卷(二)数学模拟预测题
7 . 如图,在四边形
中,
,若
,
,M为
的中点,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49143fef015eafcac2f223c289fc136b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
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8 . 如图,在
中,
,
,M是
中点,
,
分别交
、
于点O、I,若
的面积为48,则下面结论①
;②
的面积为12;③
;④
;正确的有______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4744b427f036dfbc6db68c87cd5c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5df2942d270858bdd78594643e5046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af10a2e9cde083e0a3e068f0cd8a822d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beed2443eb5172502b9caa076fefedb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5701f839924dbf04889a359470f3bd33.png)
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9 . 如图,边长为4的正方形
中,点E,F分别是对角线
,边
上一动点,连结
,
,
.取
,
的中点分别记为H,G,连结
,则
长度的最小值是______ .
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
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10 . 如图,在
中,
,
,点D,E分别是边
,
的中点,连接
,点F在
上且
,则
的长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243a9ae75886b75c37f88a0ba655fa31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
A.0.5 | B.1 | C.1.5 | D.2 |
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