如图,在
中,
,D,E分别为边
,
上两个动点,且
,连接
,
,当
最小时,
的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec242962a634b774f2129d1f838a94b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed7cea4fe685c76e2ad523f961abc95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f9215613b7b05217ed77268c238391.png)
更新时间:2024-06-06 08:16:20
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【推荐1】如图,在正方形
中,动点
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分别从
两点同时出发,以相同的速度在边
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上移动,连接
和
交于点
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【推荐2】黄金分割是指把一条线段分割为两部分,使较短线段与较长线段的比等于较长线段与原线段的比,其比值等于
.如图,在正方形ABCD中,点G为边BC延长线上一动点,连接AG交对角线BD于点H,△ADH的面积记为S1,四边形DHCG的面积记为S2.如果点C是线段BG的黄金分割点,则
的值为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029d393bb07b7140905b85f550519de4.png)
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【推荐1】如图,在平面直角坐标系
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绕点O按顺时针方向旋转,点A,B的对应点分别是
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
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【推荐2】如图,在Rt△ABC中,∠ABC=90°,BA=BC.点D是AB的中点,连接CD,过点B作BG丄CD,分别交CD、CA于点E、F,与过点A且垂直于AB的直线相交于点G,连接DF.给出以下四个结论:①
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AB;④S△ABC=5S△BDF,其中正确的结论序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4154d71f113f819e9ca73857379b70f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d74ef32584586ec4857acd0a3f4fe9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/13/1a8c8dbe-c707-4ba9-a11c-58827ee7c7b9.png?resizew=145)
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