如图,
为等腰直角三角形,
,以斜边
为直角边作等腰直角三角形
,再以
为直角边作等腰直角三角形
,…,按此规律作下去,则
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/6b5f9a75-3974-4734-b952-c9b86d93f661.png?resizew=315)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15536798ab47cadce6d4d80f542051f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee5747ae1c372be1170242c4aecee5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c76916c6ff302cf4fb4b6ace5bb3a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5b7c627e5932a413b34ff3f597b5ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f7b988095b7285557491c7bb2fb5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23de2a59f81db67daf4f44b51771b9aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337d0dc1076cfdb02ffb40bf4dac0d90.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/6b5f9a75-3974-4734-b952-c9b86d93f661.png?resizew=315)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-04-10 06:11:41
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【推荐1】如图,
个底边长为
,腰长为
的等腰
拼成下图所示,则图中的线段之和是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,下面是按照一定规律画出的“树形图”,经观察可以发现:图
比图
多出2个“树枝”,图
比图
多出4个“树枝”,图
比图
多出8个“树枝”,…,照此规律,图
比图
多出( )个“树枝”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
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A.32个 | B.48个 | C.56个 | D.60个 |
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【推荐1】如图,在正方形
中,将边
绕点
逆时针旋转至
,连接
,若
,
,则正方形
的边长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/ae976cc1-97db-425e-865b-6cc24dc4e598.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db94ea06ef27a92107d4bb70a404a826.png)
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A.8 | B.10 | C.![]() | D.![]() |
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【推荐2】如图,Rt△ABC中BC=3,AC=4,在同一平面上把△ABC沿最长边AB翻折后得到△ABC',则CC'的长等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/a7cf54a4-c1a0-4790-8cdd-e772a7dcf311.png?resizew=150)
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【推荐1】已知
是关于
的方程
的一个实数根,且该方程的两实数 根恰是等腰
的两条边长,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5879c15bcd5bf7397ddf4dd6ae333ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4933d09ddd0ef536080c4b30a760c506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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【推荐2】在平面直角坐标系
中,点
,其中
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是等腰直角三角形,且
,则m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
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