====== Tessellation 平面密铺 ======
  * [[http://www.zhihu.com/question/34916541/answer/60644653|知乎上非常好的一篇文]],by [[http://www.zhihu.com/people/lu-zz-55|陆zz]]
===== 五边 =====
{{ :public:math:wubian.png?nolink |}}