1 . 如图,
中,
,
,
,分别以
,
为边向两侧构造正方形
,
,连接
,
,
;现取四边形
四边的中点
,
,
,
,则四边形
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.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/5ddcd5435b39971f897210aa0b66a259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/4e73b49a-69ed-4a6e-9d2a-1c560fa444d3.png?resizew=413)
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2 . 已知正方形
与正六边形
都内接于圆
,若正方形边长为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbd783caa4495dc73cf2537dcae0c0a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/653f89d5be377001db7079b40c246d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbd783caa4495dc73cf2537dcae0c0a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/24/405d98d4-1b53-411b-8b24-520a052431f3.png?resizew=174)
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3 . 如图,在平面直角坐标系中,正方形
的顶点
、
、
的坐标分别为
、
、
.若抛物线
的图象与正方形
有公共点,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ce2f5e22175e3ff8ab5e0afca58f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4681073487d89441a8db549f4187dda8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/1e0c1378-dfae-46b1-bf69-848d596050d4.png?resizew=142)
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2023-12-08更新
|
266次组卷
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14卷引用:吉林省长春市汽开区2021-2022学年九年级下学期6月质量检测数学试题
吉林省长春市汽开区2021-2022学年九年级下学期6月质量检测数学试题(已下线)22.1.2 二次函数y=ax2的图象和性质(分层练习)-2022-2023学年九年级数学上册同步精品课堂(人教版)吉林省实验中学2022-2023学年上学期九年级质量检测(一)数学试卷(9月考)(已下线)第二十二章 二次函数(B卷·学霸加练卷,难度★★★★★)-【单元测试】2022-2023学年九年级数学上册分层训练AB卷(人教版)湖北省黄冈市部分学校2022—2023学年上学期九年级第一次测评数学试题 河南省信阳市息县2022-2023学年九年级上学期适应性测试(一)数学试题吉林省长春市长春经济技术开发区洋浦学校2022-2023学年九年级上学期期中数学试题山西省吕梁市汾阳市2022-2023学年九年级上学期期中数学试卷河南省开封市第十三中学2022-2023学年九年级上学期期中数学试题山西省吕梁市汾阳市海洪初级中学校2022-2023学年九年级上学期期中考试数学试题河北省保定市雄县第一初级实验中学2023-2024学年九年级上学期第一次月考数学试题福建省泉州市永春县第一中学2023-2024学年九年级上学期月考数学试题江西省南昌市2023-2024学年九年级上学期期末数学试题天津市第六十一中学2023-2024学年九年级上学期期末数学试题
4 . 如图,在
中,
,把边长分别为
的
个正方形依次放入
中,第1个正方形
的顶点分别放在
的各边上;第2个正方形
的顶点分别放在
的各边上;其他正方形依次放入,则第
个正方形的边长
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad0bf5adcec82df44bbccdd5923b6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11685d0ecb1ed785547018cde2cd4cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf53c4153e73de3d67ac52731c098fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477323892ce1ce379974e858616fe0fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b80969eb9e9739b3efc5a576c136cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/352d8219-11c7-4785-a221-b4e8b380a3d3.png?resizew=146)
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2023-12-02更新
|
42次组卷
|
2卷引用:山东省枣庄市薛城区2023-2024学年九年级上学期期中数学试题
5 . 学习了《旋转》后,在数学实践活动课上,小明在如图所示的平面直角坐标系中将
绕某个点顺时针旋转一定度数后得到
,
的对应点分别为
,则该旋转中心的坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d100e7830d2e9d27bdccb181c79b65.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/a3a8d9cf-8242-4032-891d-b7e789dd3a7d.png?resizew=178)
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6 . 如图,正方形四个顶点分别位于两个反比例函数
和
的图象的四个分支上,则
的值=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85410ff00c81839ff9a64bf86dc36f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bde98b608331387ffbfaab1845cb662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/0d664956-946f-43b8-bcb0-1210ba5554b1.png?resizew=200)
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2023-10-23更新
|
382次组卷
|
8卷引用:安徽省合肥市瑶海区第三十八中学2023-2024学年九年级上学期期中数学试题
7 . 七巧板被誉为“东方魔板”,小丽利用七巧板
如图甲
中的各板块拼成一个“帆船”
如图乙
,则“帆船”的长与高之比为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/27/475657e9-6faa-4bbb-a7bc-12931f3997f6.png?resizew=261)
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8 . 如图,已知正方形
的边长为3,P是对角线
上一点,
于点E,
于点F,连接
,
.给出下列结论:①
;②
一定是等腰三角形;③四边形
的周长为6;④
的最小值为
.其中正确结论的序号为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/f970ac1b-6b82-497d-923e-751111d5665e.png?resizew=123)
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2023-09-27更新
|
88次组卷
|
3卷引用:陕西省榆林市第十中学2023-2024学年九年级上学期第一次月考数学试题
9 . 如图,在平面直角坐标系中,正方形
的顶点O、B的坐标分别是
,
,则顶点C的坐标是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b6a9ffffc0c461881b427c543924cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812a9b58ccba331cfd21d244329af01.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/0c5e4fb2-0e5a-470e-ba18-aaf0dbfda5ab.png?resizew=161)
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2023-09-07更新
|
124次组卷
|
6卷引用:广东省佛山市南海区桂城街道平洲第二初级中学2023-2024学年九年级上学期第一次月考数学试题
10 . 正方形
,
,
,…按如图的方式放置.点
,
,
,…和点
,
,
,…分别在直线
和
轴上,则点
的坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4635a4e561d862638f6818e85e74bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220a67f3143cc51f6496c874d3ce4f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb95430ad5499ddd5197388b8ed9b5eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ee24753da0e940bf82dd73a80b2eea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/25/e390ce67-934a-451d-8397-71e36088adc3.png?resizew=248)
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