在如图所示的正方形网格中,建立平面直角坐标系,
的三个顶点的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/dc6f7bf7-2f3f-4953-af3a-36d6f292bbea.png?resizew=154)
(1)以点B为位似中心,在网格内画出
,使
与
位似,且相似比为2:1,点C的对应点
的坐标是________.
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee33736169c249a029f478a605dc2c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50cda44186bf89ea3232d78c05a8e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ffabaeaf60b2cf8aba534b001d27e0b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/dc6f7bf7-2f3f-4953-af3a-36d6f292bbea.png?resizew=154)
(1)以点B为位似中心,在网格内画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
更新时间:2024-01-07 14:18:01
|
相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐1】如图,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/2024/1/2/5c46b62b-3628-4273-a0f6-91ed4e4151d3.jpg?resizew=231)
(1)
绕原点
逆时针旋转
,画出旋转后得到的
,并求边
在旋转过程中扫过的图形面积;
(2)以原点
为位似中心,位似比为
,在
轴的右侧,画出
放大后的图形
.如果点
在线段
上,那么请直接写出点
的对应点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85df75e14f5544a7f9ef12770382805.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/5c46b62b-3628-4273-a0f6-91ed4e4151d3.jpg?resizew=231)
(1)
![](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/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)以原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc0da9bf8bf6b5007d2f14f9f885579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/9de07306fe4bb9852e1136cbac862d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】如图,在平面直角坐标系中,
的顶点坐标分别为:
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/097d3cb1-745a-4aa9-87cd-38876d466535.png?resizew=262)
(1)以原点O为位似中心,在第一象限内画出
,使得
与
位似,且相似比为2:1;
(2)在(1)的条件下,分别写出点A、B、C的对应点D、E、F的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f1f2b3e349a9be5fb156ae31525b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baca988e757625c577e02752422a72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcce0d8777fbf2c7c6e900caa9c92d81.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/097d3cb1-745a-4aa9-87cd-38876d466535.png?resizew=262)
(1)以原点O为位似中心,在第一象限内画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在(1)的条件下,分别写出点A、B、C的对应点D、E、F的坐标.
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解答题-作图题
|
较易
(0.85)
【推荐1】如图,网格中,小正方形边长均为1,点M(1,2),△ABC各顶点均在格点处.
![](https://img.xkw.com/dksih/QBM/2022/3/8/2932023811244032/2939047864492032/STEM/f9a4b189552245bb924e39e43f9112b1.png?resizew=322)
(1)以点M为位似中心,在网格中画出△ABC的位似图形△A'B'C',使△A'B'C'和△ABC的位似比为2:1;
(2)写出
的各顶点坐标.
![](https://img.xkw.com/dksih/QBM/2022/3/8/2932023811244032/2939047864492032/STEM/f9a4b189552245bb924e39e43f9112b1.png?resizew=322)
(1)以点M为位似中心,在网格中画出△ABC的位似图形△A'B'C',使△A'B'C'和△ABC的位似比为2:1;
(2)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
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解答题-问答题
|
较易
(0.85)
【推荐2】如图,在平面直角坐标系中,
,
,
.
(1)画图:以
点为位似中心将
向右侧放大两倍;
(2)若
内有一点
,则放大后点
对应点的坐标是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f68f688a0af020ed2aa105a1bcdb52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b847b19ddba34cb51b4620be81f792b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/25306ffe-9722-49ad-a6e7-d50919a56a67.png?resizew=214)
(1)画图:以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐1】如图,在单位长度为1的
正方形网格中,
两点都在格点上,连接
,请完成下列作图:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/9c7c5618-61aa-4733-8d75-270e12905ee3.png?resizew=139)
(1)在网格中找一个格点
,使得
是等腰三角形(作一个即可);
(2)在网格中找一个格点
,使得
的面积为6(作一个即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/9c7c5618-61aa-4733-8d75-270e12905ee3.png?resizew=139)
(1)在网格中找一个格点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在网格中找一个格点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
您最近一年使用:0次
解答题-作图题
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较易
(0.85)
名校
【推荐2】
(1)把
向下平移5个单位长度,再向右平移2个单位长度,请你画出平移后的
.
(2)计算
的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/2/563fe4bb-d8fa-4e57-b795-4d381c833a58.png?resizew=186)
(1)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次