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Ex5D#6
Author:
Big Lee
GeoGebra
New Resources
拼砌四邊形
錐體建築師
直角坐標平面上的旋轉變換
三位數除以一位數（二）
【案例】2013年安徽高考15题
Discover Resources
百分數（小學）：折扣 / 賺賠（HTML5 版）
周界(移邊)
Dodecahedron
Epicycloid
伸縮矩陣的副本
Discover Topics
Poisson Distribution
Trigonometry
Addition
Difference and Slope
Interest Calculation