在如图所示的正方形网格中,每个小正方形的边长都是1,△ABC的顶点都在正方形网格的格点(网格线的交点)上.
(1)请在如图所示的网格平面内作出平面直角坐标系,使点A坐标为(1 ,3),点B坐标为(2 ,1);
(2)请画出△ABC关于y轴对称的图形△A1B1C1,并写出点B1的坐标为 ;
(3)P为y轴上一点,当PB+PC的值最小时,P点的坐标为 .
(1)请在如图所示的网格平面内作出平面直角坐标系,使点A坐标为(1 ,3),点B坐标为(2 ,1);
(2)请画出△ABC关于y轴对称的图形△A1B1C1,并写出点B1的坐标为 ;
(3)P为y轴上一点,当PB+PC的值最小时,P点的坐标为 .
![](https://img.xkw.com/dksih/QBM/2022/1/10/2891606425911296/2892171400699904/STEM/326013ac-9507-4ad5-824d-e57464b3f033.png?resizew=237)
更新时间:2022-01-11 14:40:41
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解答题-问答题
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【推荐1】如图,在平面直角坐标系中,△ABC的顶点A的坐标为(0,﹣1),顶点B在x轴的负半轴上,顶点C在y轴的正半轴上,且∠ABC=90°,∠ACB=30°,线段OC的垂直平分线分别交OC,BC于点D,E.
(1)点C的坐标;
(2)点P为线段ED的延长线上的一点,连接PC,PA,设点P的横坐标为t,△ACP的面积为S,求S与t的函数关系式;
(3)在(2)的条件下,点F为线段BC的延长线上一点,连接OF,若OF=CP,求∠OFP的度数.
(1)点C的坐标;
(2)点P为线段ED的延长线上的一点,连接PC,PA,设点P的横坐标为t,△ACP的面积为S,求S与t的函数关系式;
(3)在(2)的条件下,点F为线段BC的延长线上一点,连接OF,若OF=CP,求∠OFP的度数.
![](https://img.xkw.com/dksih/QBM/2018/12/27/2105769056985088/2109565447159808/STEM/e6d84bf707d84d6ca1a3602eaab8516e.png?resizew=440)
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【推荐2】在平面直角坐标系中,
的位置如图所示,已知点A的坐标是
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/6dcd258d-dfe8-4896-8f1d-b79aaea5f6e0.png?resizew=271)
(1)点
的坐标为______,点
的坐标为______.
(2)
的面积是______.
(3)作点
关于
轴的对称点
,连接
,计算
、
两点之间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238e6513f89285e3aa2bff0010a2b143.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/6dcd258d-dfe8-4896-8f1d-b79aaea5f6e0.png?resizew=271)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)作点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
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【推荐1】已知在平面直角坐标系中,点A的坐标为
.
(1)若点A在
轴上,求出点A的坐标;
(2)若点A到
轴的距离为
,求出点A的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce35b5a48a31d1ac186a724c49b1ca83.png)
(1)若点A在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)若点A到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
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【推荐2】在平面直角坐标系中,有点
,
且
,
满足
.
(1)求
、
两点坐标;
(2)如图,直线
轴,垂足为点
.在直线l上是否存在
点,若
,若存在,请求出
点坐标,若不存在,请说明理由;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d8e820de039970450591eea09c1d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd06d4b3e9eb84cb458491e8cf75e517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d9c0401bb6f74fb6b3fcc5ede4f66f3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)如图,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165a501b2e6a3acc46212e59a166c053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdebfa07f9b53d79d119cd3a1048e78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f26a3d308f269c2e09d3b0d90b3f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2021/5/7/2715985847541760/2782273355718656/STEM/c9ee50e4-f85d-44bb-9837-b6401a2dc763.png)
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解答题-作图题
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【推荐1】如图,在平面直角坐标系中,已知
的三个顶点的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721397424799744/2767723100135424/STEM/96ea7075-af55-4a38-a2ca-aa8d616094ba.png)
(1)画出
关于
轴的对称图形
;
(2)画出
向右平移4个单位长度后得到的
;
(3)如果点
是
内部的一点,则经过上述两次变换后,在
内部的对应点
的坐标是__________;
(4)在
轴上存在一点
,使
的值最小,请在图中标出点
,并直接写出点
的坐标__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0a2c3e186a1c1887b3f95a3c809fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f89b18f69812fb34fd1290e2f1b36aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f12f12b6e78f741846da2d56089631.png)
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721397424799744/2767723100135424/STEM/96ea7075-af55-4a38-a2ca-aa8d616094ba.png)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
(3)如果点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
(4)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-作图题
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【推荐2】如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/c7a223e6-9c87-41bf-a4bc-91034b4945ca.png?resizew=198)
(1)请画出
关于
轴对称的图形
;
(2)若点
在
内,其关于
轴对称的点
的坐标为 ;
(3)求
轴上一点
的坐标,使
的值最小.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/c7a223e6-9c87-41bf-a4bc-91034b4945ca.png?resizew=198)
(1)请画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e211e1a1b43adc52e401350b26c9a16.png)
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解答题-作图题
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【推荐1】如图,在平面直角坐标系中,
的三个顶点的坐标分别为
,
,
.
(1)画出
关于
轴对称的
;
(2)点
的坐标是 ,点
的坐标是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4212e0f2da912518e8b02a741cc91ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79e611bab95776f27cccae0016d51f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e9fb6df7b77b00516574532c9b88f1.png)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/2020/1/16/2378543832784896/2379970734194689/STEM/7214466553c24f2a92e1606dede08a8d.png?resizew=316)
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解答题-作图题
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【推荐2】(1)在图中画出与△ABC关于直线l成轴对称的△A1B1C1;
(2)△ABC的面积为 ;
(3)在直线l上找一点P(在答题纸的图中标出点P),使PB+PC的长最短.
(2)△ABC的面积为 ;
(3)在直线l上找一点P(在答题纸的图中标出点P),使PB+PC的长最短.
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854417445011456/2858061022224384/STEM/d6f8e00a-1b4f-4dee-8df1-a0524eac4a6a.png)
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