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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
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兩組對邊相等的四邊形
畫出對稱圖形
兩位數加法
柱體建築師
找出對稱軸
Discover Resources
畫三角形 題1d
Is this a prism 7
多項式函數
定积分的概念（移动端）的副本
圓錐截痕
Discover Topics
Arithmetic Operations
Algebra
Geometric Transformations
Angles
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