s3

摺紙片段

1.     摺出正四面體方法

https://www.youtube.com/watch?v=cgEVikCbSII&list=WL&index=71

2.      摺正八面體

https://www.youtube.com/watch?v=xJmzIzOhMo0&list=WL&index=70

3.      摺正十二面體

https://www.youtube.com/watch?v=mPrpl1zCreY&list=WL&index=69