如图,在平面直角坐标系中,网格中每一个小正方形的边长都是1个单位长度.
(1)写出点A,B,C的坐标:A(______),B(______),C(______);
(2)画出
关于y轴对称的图形
;
(3)在y轴上找一点P,使
线段和最小,并求出最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/1bf1a95f-32dc-46e4-8cfc-141ed71e8d69.png?resizew=166)
(1)写出点A,B,C的坐标:A(______),B(______),C(______);
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(3)在y轴上找一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9178be39a580c4f63d0c55a8bc8020a4.png)
更新时间:2023-08-26 18:45:10
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解答题-作图题
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【推荐1】如图,在正方形网格中,直线l与网格线重合,点A,C,
,
均在网格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/6504daf2-3905-4eee-aac9-a72c1ae6ece7.png?resizew=242)
(1)已知△ABC和
关于直线l对称.
①请在图中把△ABC和
补充完整;
②在以直线l为y轴的平面直角坐标系中,若点A的坐标为
,则点
的坐标为______;
(2)在直线l上画出点P,使得
最短.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/6504daf2-3905-4eee-aac9-a72c1ae6ece7.png?resizew=242)
(1)已知△ABC和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
①请在图中把△ABC和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
②在以直线l为y轴的平面直角坐标系中,若点A的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab73312146efb9de1fe09b8cfd5b729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(2)在直线l上画出点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a8d10345f567e0f2daf18529d42f0.png)
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解答题-作图题
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名校
【推荐2】如图,
的顶点坐标分别为
,
,
.
(1)画出
绕点A逆时针旋转
的
;
(2)直接写出点
,
的坐标.
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/29/0d41b00d-b031-44d0-9453-265288fb63b5.png?resizew=289)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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(2)直接写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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解答题-问答题
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【推荐1】如图,方格纸中小正方形的边长为1,
的三个顶点都在小正方形的格点上,判断
的形状,并说明理由.
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解答题-作图题
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【推荐2】如图,在
的正方形网格中,每个小正方形的边长均为1,线段
的端点均在小正方形的顶点上,按要求画图.
(1)在图中画出一个面积为4的等腰三角形
(点C在小正方形的顶点上),使A,B,C中任意两点都不在同一条网格线上;
(2)在图中画出一个面积为5的直角三角形
(点F在小正方形的顶点上),使D,E,F中任意两点都不在同一条网格线上,连接
,直接写出
的长.
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/21/4a17beb8-4e72-44ed-a51d-cc22442930f6.png?resizew=248)
(1)在图中画出一个面积为4的等腰三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)在图中画出一个面积为5的直角三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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解答题-作图题
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【推荐1】利用对称性可以设计美丽的图案,在边长为1的正方形方格纸中,有如图所示的△ABC(顶点都在格点上).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/28/e9d0ad4b-0e6e-4028-889d-71cca9ed56eb.png?resizew=205)
(1)先作出该三角形关于直线
成轴对称的
;
(2)再作将
绕点
顺时针方向旋转90°后的
;
(3)求
的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/28/e9d0ad4b-0e6e-4028-889d-71cca9ed56eb.png?resizew=205)
(1)先作出该三角形关于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ed6cbf3f2963a662c3a96a5628d1bc.png)
(2)再作将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ed6cbf3f2963a662c3a96a5628d1bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5326817f9af012432a202749d1df59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ecf59238c5838603363f7a172fe34df.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ecf59238c5838603363f7a172fe34df.png)
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解答题-作图题
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【推荐2】如图,已知三点
,
,
,
与
关于
轴对称,其中
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,
,分别是点A,
,
的对应点.画出
,并写出点
的坐标.
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解答题-作图题
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【推荐1】如图,在正方形网格中,每个小正方形的边长都为1,点A,点B在网格中的位置如图所示.
(1)请在下面方格纸中建立适当的平面直角坐标系,使点A、点B的坐标分别为(1,﹣3)、(4,﹣2);
(2)点C的坐标为(2,﹣1),在平面直角坐标系中标出点C的位置,连接AB,BC,CA,则ABC的面积为 .
(3)在图中画出△ABC关于y轴对称的图形△A1B1C1,并写出各点坐标:A1( ),B1( ),C1( );
(4)在x轴上找到一点P,使△ABP的周长最小,直接写出这个周长的最小值: .
(1)请在下面方格纸中建立适当的平面直角坐标系,使点A、点B的坐标分别为(1,﹣3)、(4,﹣2);
(2)点C的坐标为(2,﹣1),在平面直角坐标系中标出点C的位置,连接AB,BC,CA,则ABC的面积为 .
(3)在图中画出△ABC关于y轴对称的图形△A1B1C1,并写出各点坐标:A1( ),B1( ),C1( );
(4)在x轴上找到一点P,使△ABP的周长最小,直接写出这个周长的最小值: .
![](https://img.xkw.com/dksih/QBM/2021/11/29/2861480856379392/2861853692952576/STEM/91269355-1d78-45d6-a68a-2ca4f7c19774.png)
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解答题-作图题
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【推荐2】已知A、B、C的坐标分别为(0,0),(-1,2),(-3,-1)
(1)作出![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)作出关于y轴的对称图形并写出顶点坐标
(1)作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)作出关于y轴的对称图形并写出顶点坐标
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/5862f1d7-e194-416f-950d-a99ef72f2289.png?resizew=228)
您最近一年使用:0次