https://drive.google.com/drive/folders/1JFyMvDDgy0FmWxeiKuQZfm4P_8v6JJfE?usp=sharing

https://www.geogebra.org/m/kfjfrqks 阿拉伯鞋匠刀

https://www.geogebra.org/m/QcQEKx94 菱形60面體

https://www.geogebra.org/m/p3gykuvx 拋物線的光學性質

https://www.geogebra.org/m/D94ZAhUA 數學題目

https://www.geogebra.org/m/eHtfwcRG 兩圓相切, 與雙曲線軌跡