展開圖 | Net of 3-D Figures
影片內容：
00:05 – 繪畫展開圖 | constructing nets of 3-D figures
02:14 – 分辨展開圖的對應立體 | constructing 3-D figures from their nets
00:05 – 繪畫展開圖 | constructing nets of 3-D figures
02:14 – 分辨展開圖的對應立體 | constructing 3-D figures from their nets