名校
1 . 如图,是由
个边长为1的小正方形网格组成,每个小正方形的顶点称为格点,
的三个顶点A,B,C均在格点上,在
,
上各取一点D,E,请仅用无刻度的直尺,按下列要求画图
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/18ac2d9a-a6b3-4f18-a5cc-b403cc770baa.png?resizew=260)
(1)在图①中画线段
,使![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6047a0228d514ad935f42f5bc881c1.png)
(2)在图②中画线段DE,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dde0704f1cbf18977df5b4799b4d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/18ac2d9a-a6b3-4f18-a5cc-b403cc770baa.png?resizew=260)
(1)在图①中画线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6047a0228d514ad935f42f5bc881c1.png)
(2)在图②中画线段DE,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92cb329869e8ebdbc4c223534e9bf509.png)
您最近一年使用:0次
2023-03-30更新
|
159次组卷
|
2卷引用:人教版(五四制)六年级下册数学 第9章 几何图形初步 单元测试卷
2 . 在直角三角形
°,
,点
,
,
,…,
把边
分成10等份.过
,
,
,…,
作
的垂线,分别交
于
、
、
,…,
(如下图所示)试求
…+
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89dc0132401e8064fce8710a54db3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3303389152d2d7901dcf00fae3f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3303389152d2d7901dcf00fae3f86.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e24686a4a867b15b6de1352d9b6b554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d20d440406b94123a2faf012cbdb282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711516bf9db6fb2a3cd31c0758d844ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/6b92a595-9e06-40e4-a23a-15622a78e4dd.png?resizew=295)
您最近一年使用:0次