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生日悖論
Author:
李春培
生日悖論
GeoGebra
New Resources
算柱 (兩位數)
畫出對稱圖形
兩位數除以一位數（一）
四邊形的特性
兩位數加法
Discover Resources
從 12 面體、20 面體到 C60 C80
鑲嵌圖形-2 SAKULA
area
十分逼近法
拼出三角形的副本
Discover Topics
Mode
Conic Sections
Exponential Functions
Geometry
Arithmetic Mean