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固定周界的長方形面積變化
Author:
GeoGebra Institute of Hong Kong
Topic:
Area
,
Perimeter
,
Square
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
異分母分數減法
畫出對稱圖形
三位數除以一位數（二）
Discover Resources
兩圓的位置關係
q5-9
線性規劃
五邊形
洋葱初中数学
Discover Topics
Surface
Inequalities
Real Numbers
Cylinder
Sphere