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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
画直线等分三角形的面积
四邊形的特性
三位數除以一位數（一）
四邉形 (四年級) 教師版
錐體建築師
Discover Resources
Net of a cone
我的第一個GGB動畫
In-centre
(007)80201辛宇婕
指令
Discover Topics
Equations
Rotation
Vectors 2D (Two-Dimensional)
Arithmetic Mean
Rhombus