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正二十面體
Author:
侯杰材
正二十面體
GeoGebra
New Resources
四邊形的特性
找出對稱軸
錐體建築師
畫出對稱圖形
兩位數除以一位數（一）
Discover Resources
對稱及變換
Probability animation
畢氏定理學生(楊知樾)
tool
Copy of 以剪貼比較圖形大小 題1
Discover Topics
Dilation
Rhombus
Exponential Functions
Median Line
Sine