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圖二 的複本
Author:
Michael Ma
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
画直线等分三角形的面积
畫出對稱圖形
三位數除以一位數（一）
兩位數加法
四邊形的特性
Discover Resources
ppppp
類正五邊形摺法
Control a, b and c in quadratic function
數線_小數的認識
Fractal
Discover Topics
Power Functions
Logic
Curve Sketching
Ellipse
Real Numbers