正十二邊形通過鉸鏈變環:
三個六邊形組成一個六邊形:
https://www.bilibili.com/video/BV15t4y1k7ks
四個五角星割補成一個五角星:
https://www.bilibili.com/video/BV1NB4PemEXf
五塊拼圖,五種圖形:
https://www.bilibili.com/video/BV1RT4y1N7rR
三個六芒星割補成一個大六芒星:
https://www.bilibili.com/video/BV15t4y1k7ks
X變正方形
https://www.bilibili.com/video/BV1RK4y1r7K6
一個七芒星分裂成兩個七芒星
https://www.bilibili.com/video/BV12J41187Xz
拿走六角星,還是六角星
https://www.bilibili.com/video/BV1ZJ41147Sr
拿走正方形還是正方形
https://www.bilibili.com/video/BV1wJ41167Mn
餘切定理證明
https://www.bilibili.com/video/BV1VJ41117t5
開心得到三倍心
https://www.bilibili.com/video/BV1xt4y1J76B
第十枚硬幣
https://www.bilibili.com/video/BV1HJ411U7zT
三等分角:帕斯卡蝸線法
https://www.bilibili.com/video/BV1WqtMeZEXo