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正20面体
Author:
2143550746
GeoGebra
New Resources
拼砌四邊形
畫出對稱圖形
異分母分數減法
錐體建築師
兩位數除以一位數（一）
Discover Resources
triangle
滑桿動畫基礎
reflectional symmetry_6
拋物線作圖
畫等腰直角三角形 題2
Discover Topics
Cuboid
Cone
Stochastic Process or Random Process
Calculus
Normal Distribution