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斜率大小
Author:
Sam
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數（一）
錐體建築師
【案例】2013年安徽高考15题
柱體建築師
Discover Resources
小四小數
優良作品2
平移
公平的切蛋糕 Selfridge-Conway 免嫉妒分法(envy-free cake-cutting)
中心投影、平行投影
Discover Topics
LCM and GCD
Rectangle
Optimization Problems
Random Experiments
Combinatorics