如图,已知正方形
的边长为3,P是对角线
上一点,
于点E,
于点F,连接
,
.给出下列结论:①
;②
一定是等腰三角形;③四边形
的周长为6;④
的最小值为
.其中正确结论的序号为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2ef99db257cc1acb08e3a5e0006d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544204617f1eb4e26a082a72d27d0bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a8bf5ca1bb015cbd16139033f6614c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fce76109c3b574feaca9cd7029c2875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/f970ac1b-6b82-497d-923e-751111d5665e.png?resizew=123)
更新时间:2023-09-27 18:47:27
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解题方法
【推荐1】如图,四边形
,
均为菱形,
,连结
,
,
,
,若
,菱形
的周长为12,则菱形
的周长为________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e6f5241f614c7d310cbf3e25a6d615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eedfb7e187720b35504d90fc0b59ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45cadfec8bd192111ad163a231314c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255dd434c47872cfe5fee20179ae9e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://img.xkw.com/dksih/QBM/2020/5/19/2466152340668416/2466754052890624/STEM/64847675-c2f2-4701-8d35-e29d9787d715.png)
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【推荐2】如图,在平面直角坐标系中,反比例函数
与正比例函数
的图像分别交于点A、B,若∠AOB=45°,则△AOB的面积是________ .
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【推荐1】如图,在
中,
,
,
分别是边
,
上的点,且
.记
,
,
的周长分别是
,
,
.
(1)若
,则
的值是_____ .
(2)求
的最大值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c513dca3b8c31bc8d0ed4301e94cc1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4300aefd67369742e2b1ddcdc02dd495.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
(2)求
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【推荐2】如图,
,线段
的两个端点分别在射线
、
上滑动,且
,以
为直角边在点
的异侧作
,且
,
,问滑动过程中
的最大值为______ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
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【推荐1】如图,矩形ABCD的两个顶点A、B分别落在x、y轴上,顶点C、D位于第一象限,且OA=3,OB=2,对角线AC、BD交于点G,若曲线y=
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【推荐2】已知矩形
,
,
,点 E 为
边的中点,点 F 为
边上的动点,点 B 和点
关于
对称,则
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【推荐1】如图,
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,
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【推荐2】如图,在△ABC中,∠BAC=90°,AB=AC=3,D为BC边上一点,且
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