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Perigal's Dissection
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
算柱 (兩位數)
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
球體建築師
三位數除以一位數（二）
Discover Resources
GGBScript
正立方體的截痕
密鋪圖形
橢圓2-四圓心近似法
Copy of Quiz on Solving Quadratic Inequalities 解二次不等式：測驗
Discover Topics
Plane Figures or Shapes
Vectors 3D (Three-Dimensional)
Equations
Logarithm
Prism