如图,在大小为
的正方形方格中,线段
的两端点都在单位小正方形的顶点上.
![](https://img.xkw.com/dksih/QBM/2019/10/11/2309553729527808/2310403594166272/STEM/9fa3c428acfd4f82b33e8ecdd36f6bb3.png?resizew=166)
(1)在方格中画出一个
,点
在小正方形的格点上使得
,
.
(2)在方格中画出一个等腰
,点
在小正方形的格点上,且使顶角为钝角,其面积等于4.
(3)在(1)(2)的条件下,连接
,四边形
的面积为______个面积单位.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a96e9c2e2a15130d1d56a1d0e16b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2019/10/11/2309553729527808/2310403594166272/STEM/9fa3c428acfd4f82b33e8ecdd36f6bb3.png?resizew=166)
(1)在方格中画出一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d384390f4e0a1e0abd4cc19382d94db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4c0122aeefeaf1b75ce0b7062216df.png)
(2)在方格中画出一个等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5e1441a49e782ff0ef46e776cde06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)在(1)(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
更新时间:2019-10-12 15:51:03
|
【知识点】 作等腰三角形(尺规作图)解读
相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐1】如图,在
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/1445c538-62d2-411f-adbe-fd589f05f0d1.png?resizew=151)
(1)
的面积等于_______.
(2)D为
的中点,P是
上的动点,连接
,
.当
取得最小值时,请在如图所示的矩形区域内,用无刻度的直尺和圆规,画出点P;并简要说明点P的位置是如何找到的.(保留作图痕迹,不要求证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/1445c538-62d2-411f-adbe-fd589f05f0d1.png?resizew=151)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d68882d58da4a445793d1c1a6f4e9c.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】如图,方格纸中每个小正方形的边长均为1,线段
、
的端点
、
、
、
均在小正方形的顶点上.
![](https://img.xkw.com/dksih/QBM/2021/6/9/2739152289128448/2740041651814400/STEM/d03c53c0-67ab-4aea-9725-acfb38d12765.png)
(1)在图中画一个以
为底的等腰
,且
的面积为7.5,点
在小正方形的顶点上;
(2)在图中画一个以
为斜边的等腰直角
,点
在小正方形的顶点上.连接
,请直接写出线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2021/6/9/2739152289128448/2740041651814400/STEM/d03c53c0-67ab-4aea-9725-acfb38d12765.png)
(1)在图中画一个以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在图中画一个以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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