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Platonic Solids 柏拉圖立體
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
異分母分數減法
找出對稱軸
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
兩位數除以一位數（二）
Discover Resources
圓錐的截面
例題6
軌跡
Cube
四年級除法
Discover Topics
Parametric Curves
Centroid or Barycenter
Optimization Problems
Isosceles Triangles
Logic