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Dodecahedron
Author:
chen mingchuan
GeoGebra
New Resources
兩位數加法
畫出對稱圖形
兩位數除以一位數（二）
拼砌四邊形
三位數除以一位數（二）
Discover Resources
角平分線
立體圖形的反射對稱
Division Algorithm 除法算法
[問題] OP 最大投影長
青字歌
Discover Topics
Step Functions
Differential Equation
Trapezoid
Addition
Circle