计算
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c7852f86fb0847ab6bf305486bbb90.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dacc3c8dd7ba0b0b17ba014145a220c.png)
更新时间:2023-01-13 10:06:51
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解答题-问答题
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【推荐1】如图,正方形网格中的每个小正方形边长都为1,每个小正方形的顶点叫格点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/6/dad69b63-f34f-4557-8a46-dca8cad3892b.png?resizew=130)
(1)以格点为顶点画
,使
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,
;
(2)求
的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/6/dad69b63-f34f-4557-8a46-dca8cad3892b.png?resizew=130)
(1)以格点为顶点画
![](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/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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