https://blog.wongcw.com/2023/04/18/%e6%96%b0%e7%99%bc%e7%8f%be%e7%9a%8413%e9%82%8a%e5%bd%a2%e9%9d%9e%e9%80%b1%e6%9c%9f%e6%80%a7%e5%96%ae%e7%93%a6%e8%a7%a3%e6%b1%ba%e4%ba%8660%e5%b9%b4%e7%9a%84%e6%95%b8%e5%ad%b8%e4%b9%8b%e8%ac%8e/
新發現的13邊形"非週期性單瓦"解決了60年的數學之謎