观察图形并填表(单位:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405554b6a34430029b4bab739d69bca3.png)
梯形个数 | 1 | 2 | 3 | 4 | 5 | 6 | … | n |
图形周长 | … |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/66493bab-f980-4ae4-a176-57471d7211e8.png?resizew=396)
更新时间:2023-02-24 08:53:13
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【推荐1】如图所示,由一些点组成形如三角形的图形,每条边(包括两个顶点)有
(
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时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
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【推荐2】如图,△ABC的面积为1,分别倍长(延长一倍)AB,BC,CA得到△A1B1C1,再分别倍长A1B1,B1C1,C1A1得到△A2B2C2.…按此 规律,倍长n次后得到的△A2016B2016C2016的面积为__ .
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【推荐1】下列图案是我国晋商大院窗格的一部分,其中“O”代表窗格上所贴的剪纸,①图中有5个,②图中有8个,③图中有11个…则第10个图中所贴剪纸“O”的个数为_____ .
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【推荐2】如图
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且
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