如图,
三个顶点的坐标分别为
,
,
,请在第一象限内,画出一个以原点
为位似中心,与
的相似比为
的位似图形
,并写出
各个顶点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577f34450607debe6186e7e1c523e43e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baca988e757625c577e02752422a72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519f1ca90b9d5c950582845f74dd42a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://img.xkw.com/dksih/QBM/2019/9/20/2294793334112256/2295396909219840/STEM/82a9045b43dc4238b321d0f3635ba1ca.png?resizew=168)
更新时间:2019-09-21 10:59:52
|
相似题推荐
解答题-作图题
|
适中
(0.65)
名校
【推荐1】如图,
中任意一点
经过平移后对应点为
.
![](https://img.xkw.com/dksih/QBM/2021/1/15/2636684220047360/2640146403377152/STEM/8996bb50-0c09-4fff-be25-b013a4db3f9d.png)
(1)画出
作同样的平移后得到的
,并写出
的坐标;
(2)以点
为位似中心,画出
的一个位似
,使它与
的相似比为
.并写出
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd00351fa290493d2dc6fac8c7f5eea4.png)
![](https://img.xkw.com/dksih/QBM/2021/1/15/2636684220047360/2640146403377152/STEM/8996bb50-0c09-4fff-be25-b013a4db3f9d.png)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2c4f20594ab1443c0d8dcce42895f3.png)
(2)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403590d719951bd6133479f4e52041bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe103f073845122c66f22dcb14b711f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e78165108a15387116b25f16e236065.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在边长为1个单位长度的小正方形组成的网格中,给出了格点
及平面直角坐标系
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/a8d61586-c4ea-4827-a404-7f41a88498f1.png?resizew=186)
(1)将直接写出
关于x轴对称的
各点的坐标:A1 ,B1 ,C1 ;
(2)以点O为位似中心,位似比为2∶1,在第四象限将
放大为原来的2倍得到
,请作出
;
(3)在(2)的条件下,若
上的点
位似的对应点为点
,则点
的坐标为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/a8d61586-c4ea-4827-a404-7f41a88498f1.png?resizew=186)
(1)将直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)以点O为位似中心,位似比为2∶1,在第四象限将
![](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/828dc8dc7259c510b6d63abf40f60e90.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ee82573986d4fa6a7ee1b5f397edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】在如图的正方形网格中,每一个小正方形的边长均为1,已知格点△ABC的顶点A、C的坐标分别是(﹣2,0),(﹣3,3).
(1)请在图中的网格平面内建立平面直角坐标系.
(2)以点(﹣1,2)为位似中心,相似比为2,将△ABC放大为原来的2倍,得到△A1B1C1,画出△A1B1C1,使它与△ABC在位似中心的异侧,并写出B1点坐标为 .
(3)线段BC与线段B1C1的关系为 .
(1)请在图中的网格平面内建立平面直角坐标系.
(2)以点(﹣1,2)为位似中心,相似比为2,将△ABC放大为原来的2倍,得到△A1B1C1,画出△A1B1C1,使它与△ABC在位似中心的异侧,并写出B1点坐标为 .
(3)线段BC与线段B1C1的关系为 .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/728c0606-da08-4302-8c88-6fde56acf468.png?resizew=205)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】网格中每个小正方形的边长为1,每个小正方形的顶点为格点.平行四边形和三角形的顶点都在格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/7182fa70-9312-4066-a4b4-d81b693041a7.png?resizew=334)
(1)在网格中按
画出网格中平行四边形放大后的图形①:
(2)在网格中按
画出网格中三角形缩小后的图形②:
(3)请直接写出图形①的面积与图形②的面积的比值为______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/7182fa70-9312-4066-a4b4-d81b693041a7.png?resizew=334)
(1)在网格中按
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe103f073845122c66f22dcb14b711f.png)
(2)在网格中按
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5881f1ce9b4172ca346032d0fd1e3d.png)
(3)请直接写出图形①的面积与图形②的面积的比值为______.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系中,
三个顶点坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/4694a6f3-41e0-45ee-a691-4f2acf388785.png?resizew=314)
(1)以原点
为位似中心,在第一象限画出
的位似图形
,
与
的相似比为
;
(2)
与
的面积比为___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146c6ce3d2492da08f8913b095b99365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6eb3066e427c5d714f4d74dd63ab5f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95b4bb5f8d085eb08f92f730e206fab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/4694a6f3-41e0-45ee-a691-4f2acf388785.png?resizew=314)
(1)以原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】已知:
三个顶点的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/12/6/2608372634255360/2610312635834368/STEM/d8d3a932-ebbd-466c-8173-15e9cd574a76.png?resizew=285)
(1)画出将
绕点
逆时针旋转
的
;
(2)以点
为位似中心,将
放大为原来的2倍,得到
,请在网格纸中画出
,并写出点
的坐标.
(3)若图中每个小方格的面积为1,请直接写出
的面积。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cea6f63894aba70f5c4cfa7740eca6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532287062b0185b40b775fbbfabfe212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf13ca48d84880eda039b99b49dcb41.png)
![](https://img.xkw.com/dksih/QBM/2020/12/6/2608372634255360/2610312635834368/STEM/d8d3a932-ebbd-466c-8173-15e9cd574a76.png?resizew=285)
(1)画出将
![](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/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dc5667bbf205d6c6c6d189ebda123e.png)
(2)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(3)若图中每个小方格的面积为1,请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
您最近一年使用:0次