如图,已知
的顶点的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/4e47bbfb-8df9-4edb-b5f6-dd3937ef81ff.png?resizew=342)
(1)在第四象限画出
关于原点O的位似
,要求新图形与原图形的位似比为1∶2,并写出点
的坐标:
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba5e1427340bfe2badc42b925faf6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1267fc6380894b74d1a195bd0c55e8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ee34df0156dc705b1b2444471ff373.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/4e47bbfb-8df9-4edb-b5f6-dd3937ef81ff.png?resizew=342)
(1)在第四象限画出
![](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/b4c8a9c4957431681ddfc77895a88508.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
2022·江苏泰州·一模 查看更多[5]
江苏省泰州市兴化市2021-2022学年九年级下学期3月月考数学试题(一模)(已下线)安徽卷B-2022年中考数学模拟考场仿真演练卷山东省济宁市高新区2021-2022学年八年级下学期期末数学试题山东省枣庄市滕州市2022-2023学年九年级上学期期中数学试题(已下线)江苏省泰州市兴化市戴窑中学2021-2022学年九年级下学期第一次月考数学试题
更新时间:2022-04-26 09:21:40
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】在平面直角坐标系中,
的三个顶点坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/2192554c-8e21-440d-86b5-bfef1808484e.png?resizew=268)
(1)用没有刻度的直尺作出
关于点
的同向位似图形
,且位似比为
;
(2)画出
绕点
顺时针旋转
得到的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e663465f4417c400e326bd39f1a9a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7de2458684e59e59b205e5dd2bf6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3b76fed893ad17bc60ee4cbe4ab524.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/2192554c-8e21-440d-86b5-bfef1808484e.png?resizew=268)
(1)用没有刻度的直尺作出
![](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/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图中的小方格都是边长为1的正方形,△ABC的顶点和O点都在正方形的顶点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/80a9d124-f4ab-4ec8-a9c1-a0856bc35b36.png?resizew=234)
(1)以点O为位似中心,在方格图中画出将△ABC放大为原来的2倍得到的△A′B′C′;
(2)△A′B′C′绕点B′顺时针旋转90°,画出旋转后得到的△A″B′C″,并求点A′旋转到点A″所经过的路线长(结果保留π).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/80a9d124-f4ab-4ec8-a9c1-a0856bc35b36.png?resizew=234)
(1)以点O为位似中心,在方格图中画出将△ABC放大为原来的2倍得到的△A′B′C′;
(2)△A′B′C′绕点B′顺时针旋转90°,画出旋转后得到的△A″B′C″,并求点A′旋转到点A″所经过的路线长(结果保留π).
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【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
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/6/7d20cfd7-72b5-46b4-a0c3-bc448b09e9bb.png?resizew=293)
(1)画出与
关于y轴对称的
;
(2)以原点O为位似中心,请在第三象限内画一个
,使它与
位似,且相似比为2,并写出点
,
,
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39434903dca5f23a17e1a928ffbecd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9412b2f37124a6f9c10d29623e3725d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b69f35d518fca93a3a627b738d993d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/6/7d20cfd7-72b5-46b4-a0c3-bc448b09e9bb.png?resizew=293)
(1)画出与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)以原点O为位似中心,请在第三象限内画一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,
的三个顶点的坐标分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/24/d39e5504-14d9-49dc-9e43-7205b5346b70.png?resizew=226)
(1)画出
关于x轴对称的
,并写出
点的坐标;
(2)以坐标原点O为位似中心,在x轴下方,画出
的位似图形
,使它与
的位似比为
;
(3)若线段
上有一点
,求经过(1),(2)变换的过程中的对应点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747c238f5f79fa20424352ad98a2b0ca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/24/d39e5504-14d9-49dc-9e43-7205b5346b70.png?resizew=226)
(1)画出
![](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)
(2)以坐标原点O为位似中心,在x轴下方,画出
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe103f073845122c66f22dcb14b711f.png)
(3)若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21872d8f6a518e0a2993ccf7a795ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5425108c557f0f21474c045334f97d9c.png)
您最近一年使用:0次