两边之比为黄金分割比
的矩形称为“黄金矩形”,许多经典的艺术作品如希腊雅典的巴特农神庙、蒙娜丽莎或断臂维纳斯等都包含有黄金分割比,它能给人们带来视觉上的美感。如图,矩形
就是一个“黄金矩形”,其对角线
与边
的夹角近似为
,
为边比上的一点,
与
的交点为
现将矩形一边DC沿直线
折叠,使点
落在点
上,且满足
与
垂直,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf312b70601b0657de36880f6f474bb.png)
______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309afaa9f12ee779d12fd79bb8faa37c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a778d00169926f3259a90973c284dbe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf312b70601b0657de36880f6f474bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2ffe216a34f1d35cc9bc608a0b56b6.png)
![](https://img.xkw.com/dksih/QBM/2020/8/25/2535412237860864/2541153522671617/STEM/8afb61a48c8349ca8f683e7255c5ab71.png?resizew=464)
19-20八年级下·湖北武汉·期末 查看更多[4]
湖北省武汉市洪山区2019-2020学年八年级下学期复学质量检测数学试题(已下线)专题4.6 黄金分割(巩固篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)湖北省天门市华斯达学校2022-2023学年八年级下学期5月月考数学试题湖北省武汉第三寄宿中学2020-2021学年八年级下学期月考数学试题
更新时间:2020-09-02 16:12:59
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