freeCodeCamp/guide/chinese/mathematics/hexagon/index.md

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---
title: Hexagon
localeTitle: 六边形
---
## 六边形
六边形是六边形的多边形。内角的总和为720°。在正六边形中每个单独的角度为120°。
![a regular hexagon](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Hexagon_1.svg/2000px-Hexagon_1.svg.png)
### 区
边长为`s`的正六边形面积的公式为:
`A = (3√3*s<sup>2</sup>)/ 2`
对于边长为4的六边形面积计算如下
`(3√3*<b>4</b><sup>2</sup>)/ 2 ≈ 41.57`
### 例子
蜜蜂的蜂巢是六角网格的一个自然例子。
![一个蜂窝](https://upload.wikimedia.org/wikipedia/commons/3/3d/Honeycomb_15_03_2012.jpg)
一个不自然的六边形网格的例子是位于曼哈顿福利广场的纽约县最高法院大楼:
![纽约市最高法院大楼](http://www.secretsinplainsight.com/wp-content/uploads/NY-Supreme-Court.jpg)