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Author:
Ricky Chan
GeoGebra
New Resources
判斷球體
拼砌四邊形
球體建築師
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
莫雷角三分線定理
整數加減向量示意
Sequence指令練習(n的平方根)
集合的小结
時鐘與數學
Discover Topics
Symmetry
Complex Numbers
Indefinite Integral
Parametric Curves
Histogram