如图,
在平面直角坐标系中,点A、B、C的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/48d8df14-38e4-4581-9f3b-86d656071bb1.jpg?resizew=261)
(1)作图:作
关于y轴对称的
,其中,点A、B、C的对应点分别为
、
、
;
(2)求
的面积;
(3)作图:在x轴上找一点P使得
的值最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32463e54b757bd3d44232e1d9c81d094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22df4e45cb094fbd84e55f3728ec8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df56717ef414b1cdf053a710ef135ab6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/48d8df14-38e4-4581-9f3b-86d656071bb1.jpg?resizew=261)
(1)作图:作
![](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)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)作图:在x轴上找一点P使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
更新时间:2023-12-16 22:34:18
|
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【推荐1】如图.在方格纸上,有两个形状、大小一样的三角形,请指出如何将△ABC先用旋转、再用平移、最后用轴对称这三种图形变换,重合到△DEF上.
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【推荐2】如图,在平面直角坐标系
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(1)分别写出点A,点B,点C的坐标;
(2)画出
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/f6101dda-6a5e-4fbc-bd97-c58c4813c997.png?resizew=203)
(1)分别写出点A,点B,点C的坐标;
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-作图题
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【推荐1】如图,在长度为1个单位长度的小正方形组成的正方形网格中,点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/ba2f2d5b-99fc-4957-ba64-7103e764f2cb.png?resizew=262)
(1)在图中画出与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
【推荐2】在如图的正方形网格中,每一个小正方形的边长为1,格点三角形ABC(顶点是网格线交点的三角形)的顶点A,C的坐标分别是(﹣4,6),(﹣1,4);
(1)请在图中的网格平面内建立平面直角坐标系;
(2)请画出
ABC关于x轴对称的
A1B1C1;
(3)请在y轴上求作一点P,使
PB1C的周长最小.
(1)请在图中的网格平面内建立平面直角坐标系;
(2)请画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(3)请在y轴上求作一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/92c857c2-2aa7-4612-bb54-5dfbac1c91fc.png?resizew=318)
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解答题-作图题
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【推荐1】在平面直角坐标系中,
的三个顶点的位置如图所示.
(1)请画出
关于y轴对称的
;(其中
,
,
分别是A,B,C的对应点,不写画法)
(2)直接写出
,
,
三点的坐标:
(________),
(________),
(________);
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/3d086c21-c1d9-4ef4-9a80-73a090ca16d4.png?resizew=253)
(1)请画出
![](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/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(2)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
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【推荐2】如图,在边长为1的小正方形组成的网格中,点A,B,C均在小正方形的顶点上.
(1)在图中画出与
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://img.xkw.com/dksih/QBM/editorImg/2023/8/31/5edf6171-97ee-4af6-9e81-b29b8328c64d.png?resizew=152)
(1)在图中画出与
![](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/4234cf4d8159f5df0333bcc269ffe099.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
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