如图,在边长为1的小正方形组成的网格中,点A,B,C均在网格上;
关于直线l成轴对称的
;
(2)在直线l上找一点P,使得
的周长最小;
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(2)在直线l上找一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
20-21七年级下·河南郑州·期末 查看更多[16]
河南省郑州市中原区名校大联考2020-2021学年七年级下学期期末数学试题广西壮族自治区玉林市2021-2022学年八年级上学期期末数学试题广西壮族自治区玉林市博白县2021-2022学年八年级上学期期末数学试题新疆乌鲁木齐八一中学2021-2022学年八年级上学期期中考试数学试题陕西省西安市未央区2021-2022学年七年级下学期期末数学试题山东省烟台市龙口市(五四制)2022-2023学年七年级上学期期中数学试题山东省烟台市南部地区2022-2023学年七年级上学期期中数学试卷 广东省珠海市香洲区珠海市文园中学2022-2023学年八年级上学期10月期中数学试题河南省郑州市惠济区2022-2023学年七年级下学期期末数学试题江苏省扬州市广陵区2022-2023学年八年级上学期期中数学试题山东省菏泽市菏泽经济技术开发区多校联考2022-2023学年七年级下学期段考数学试题山东省菏泽市经开区多校联考2022-2023学年七年级下学期6月月考数学试题广东省广州市2023-2024学年八年级上学期期中模拟数学试题江苏省苏州市2023-2024学年上学期期中数学模考训练试题江苏省南京市江宁区江宁开发区学校2023-2024学年八年级上学期10月月考数学试题陕西省西安市第三中学2023~2024学年七年级下学期第二次月考数学试题
更新时间:2023-07-16 21:24:23
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相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐1】如图,在平面内有A,B,C三点,请按下列要求作图并解答.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/5c799eef-04b3-44d0-8c51-449544ddbed9.png?resizew=141)
(1)连接线段
;
(2)画直线
和射线
;
(3)在线段
上任取一点D(不同于B,C两点),连接
,并延长
至点E,使
;
(4)通过测量线段
,
,
,可知
____
(填“
”“
”或“
”),可以解释这一现象的基本事实是:____________.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/5c799eef-04b3-44d0-8c51-449544ddbed9.png?resizew=141)
(1)连接线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)画直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)在线段
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad98ad714864041a632ca949308e417.png)
(4)通过测量线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd716caa074f82747be89e828afe1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
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解答题-问答题
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较易
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【推荐2】如图均是由相同的小正方形组成的网格图,点A、B、C、D均落在格点上.请只用无刻度的直尺在格线CD上确定一点Q,使QA与QB的长度之和最小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/0c5c1c84-e5ff-4b0c-83ec-9d888ee665b7.png?resizew=269)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐1】 如图,在下列带有坐标系的网格中,
的顶点都在边长为
的小正方形的顶点上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/89a5a892-4630-4eac-b8ae-8df1cd0f7894.png?resizew=257)
(1)直接写出
的面积为 ;
(2)画出
关于y轴的对称的
(点
与点
对应,点
与点
对应),点
的坐标为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71c1515e18edb44d8e8b6feb21c3014.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/89a5a892-4630-4eac-b8ae-8df1cd0f7894.png?resizew=257)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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解答题-作图题
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【推荐2】如图,在平面直角坐标中,已知△ABC的三个顶点A(-3,1),B(-2,3),C(2,1),直线l上各点的横坐标都为1.
(1)画出△ABC关于直线l对称的△A′B′C′,直接写出点B′的坐标;
(2)直接写出点M(a,b)关于直线l对称点M ′的坐标.
(1)画出△ABC关于直线l对称的△A′B′C′,直接写出点B′的坐标;
(2)直接写出点M(a,b)关于直线l对称点M ′的坐标.
![](https://img.xkw.com/dksih/QBM/2019/11/18/2336464210903040/2336584504492032/STEM/58624dec3e18426ba3cc5c7028089b11.png?resizew=242)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐1】如图,在平面直角坐标系
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/dc3a5851-e152-4f8b-91f6-06988b6823dd.png?resizew=196)
(1)作出
关于x轴对称的三角形
,并写出
、
、
各点的坐标
( );
( );
( ).
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a755eda86cd18972b71598320dfc9a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6868a51ea0a78f2605d3d1cbe701351b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733ca3719874892ee4ffbbaa2030b2f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/dc3a5851-e152-4f8b-91f6-06988b6823dd.png?resizew=196)
(1)作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
您最近一年使用:0次
解答题-作图题
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较易
(0.85)
【推荐2】在网格上,平移
,并将
的一个顶点
平移到点
处,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/e3e6bdfc-2538-4375-8755-ef875ce42332.png?resizew=252)
(1)请你作出平移后的图形
(点
、
的对应点
、
);
(2)请求出
的面积(每个网格是边长为
的正方形).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/e3e6bdfc-2538-4375-8755-ef875ce42332.png?resizew=252)
(1)请你作出平移后的图形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)请求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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