已知,在如图所示的网格中建立平面直角坐标系后,
三个顶点的坐标分别为
、
、
.
![](https://img.xkw.com/dksih/QBM/2020/12/11/2611781450104832/2615231156453376/STEM/dd78b18c-2c2c-49d9-8686-5bc07b23d112.png?resizew=265)
(1)画出
关于
轴的对称图形
;
(2)借助图中的网格,请只用直尺(不含刻度)完成以下要求:(友情提醒:请别忘了标注字母!)
①在图中找一点
,使得
到
、
的距离相等,且
;
②在
轴上找一点
,使得
的周长最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6419152065edb8cabf887b65adb4a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dd02ef5bf6f4fd27de63840cf97021.png)
![](https://img.xkw.com/dksih/QBM/2020/12/11/2611781450104832/2615231156453376/STEM/dd78b18c-2c2c-49d9-8686-5bc07b23d112.png?resizew=265)
(1)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)借助图中的网格,请只用直尺(不含刻度)完成以下要求:(友情提醒:请别忘了标注字母!)
①在图中找一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e8c7968d57d2a20065a7cb15c9b4eb.png)
更新时间:2020-12-16 08:04:19
|
相似题推荐
解答题-作图题
|
较易
(0.85)
名校
【推荐1】如图,四边形
是矩形,连接
交于点O,
的平分线
交
于点E.
的角平分线交
于点F,连接
;(保留作图痕迹,不写作法)
(2)求证:四边形
是平行四边形.
证明:∵四边形
是矩形
∴
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
∴
∵
平分
,
平分![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2adb519efcf84551cc3fa15e041d6359.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f7c8850979dc128a2ca23dc9ae9fd3.png)
∴
∵在
和
中
∴
∴
又∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
∴四边形
是平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565d0de7845e77737b774e8db6d43ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc8e50eeccced1d7f3bc52e09a7d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f95fd176854673d22eb930f45103d76.png)
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
证明:∵四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
∴
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565d0de7845e77737b774e8db6d43ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2adb519efcf84551cc3fa15e041d6359.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f7c8850979dc128a2ca23dc9ae9fd3.png)
∴
∵在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf81da91f4f486850d143c5963abc13f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac0b5d17fa816eaccc1bac76e03180e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dbb1cd0a8cb0a6c6c6677999ef50f83.png)
∴
∴
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
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解答题-作图题
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【推荐2】作图题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/2df1faa7-1d22-427d-b59e-17fc197bc79b.png?resizew=242)
(1)在图1中,画出
关于直线
的对称图形
.
(2)在图2中,已知
和
、
两点,在
内部找一点
,使
,且
到
的两边
、
的距离相等.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/2df1faa7-1d22-427d-b59e-17fc197bc79b.png?resizew=242)
(1)在图1中,画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edacfddca36b03928f408e623f0973e.png)
(2)在图2中,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
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解答题-作图题
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较易
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【推荐1】已知四边形
,如果点D、C关于直线
对称,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/c8fb4a7c-b941-4a0c-bf14-94e4c75910b6.png?resizew=173)
(1)画出直线
;(不要求写画法)
(2)画出四边形
关于直线
的对称图形.(不要求写画法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/c8fb4a7c-b941-4a0c-bf14-94e4c75910b6.png?resizew=173)
(1)画出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)画出四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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解答题-作图题
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【推荐2】如图,已知美团外卖骑手沿着直线街道
由商家处向买家处行驶,点
分别代表街道两侧的两个小区.
![](https://img.xkw.com/dksih/QBM/2020/11/12/2591297613447168/2591576945360896/STEM/ac8be0219b6e46ad9f6d3eb614687e0b.png?resizew=318)
(1)该骑手行驶到街道的什么位置时与
两小区的距离之和最短?该骑手行驶到街道的什么位置时分别离
小区最近?请在街道
上画出上述位置,并写出画图依据;
(2)在(1)的作图基础上分析:当骑手由
处向
处行驶时,哪一段路距离
两小区都越来越近?哪一段路距离
小区越来越近而距离
小区越来越远?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://img.xkw.com/dksih/QBM/2020/11/12/2591297613447168/2591576945360896/STEM/ac8be0219b6e46ad9f6d3eb614687e0b.png?resizew=318)
(1)该骑手行驶到街道的什么位置时与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)在(1)的作图基础上分析:当骑手由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-作图题
|
较易
(0.85)
【推荐1】如图,平面直角坐标系内,小正方形网格的边长为1个单位长度,
的三个顶点的坐标分别为
.
(1)画出
关于
轴的对称图形
;
(2)画出将
绕原点
顺时针方向旋转
得到的
;
(3)求(2)中点
经过的路径长度.(结果保留
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0417d662ba81ee61acf0a9561f321535.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/e12632bc-486c-4fae-a040-ee2a1b42698e.png?resizew=234)
(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)画出将
![](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/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
(3)求(2)中点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
您最近一年使用:0次
解答题-作图题
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较易
(0.85)
【推荐2】如图,在
的正方形网格中,每个小正方形的边长都为1,网格中有一个格点
(即三角形的顶点都在格点上).
(1)在图中作出
关于直线l对称的
;
(2)
的面积为___________;
(3)在直线l上找一点Q,使
的值最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23f3b42cd6069f0e461035e76459ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/698ba4d5-77d3-4eaf-a17d-02b41aa48a37.png?resizew=154)
(1)在图中作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)在直线l上找一点Q,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f931d48d64ce0b606bc4674d5e0dc6.png)
您最近一年使用:0次