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地球仪的副本（国家）
Author:
大熊猫
GeoGebra
New Resources
兩位數除以一位數（一）
兩組對邊相等的四邊形
異分母分數減法
畫出對稱圖形
算柱 (兩位數)
Discover Resources
三個硬幣的正面數
Copy of 固定周界的長方形的面積變化
橢圓2--四圓心近似法
纏繞畫未完
求公切線段長
Discover Topics
Conic Sections
Expected Value
Frequency Distribution
Integers
Quadrilaterals