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正十二面體內接正四面體或內接正六面體
Author:
侯杰材
GeoGebra
New Resources
兩位數除以一位數（二）
柱體建築師
異分母分數減法
畫出對稱圖形
找出對稱軸
Discover Resources
畫三角形 題3a
STEM 遇上 GeoGebra 研討會暨工作坊 (小學)
Testing 20170308
橢圓軌跡
七彩勾股树
Discover Topics
General Quadrilateral
Secant Line or Secant
Ellipse
Calculus
Inequalities