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畢氏定理動畫
Author:
葉冠和
GeoGebra
New Resources
異分母分數減法
兩組對邊相等的四邊形
三位數除以一位數（二）
算柱 (兩位數)
找出對稱軸
Discover Resources
task 5
congruent activity
congruent (SS) 2
製作對稱圖形 LEVEL 2
一个二次函数图像
Discover Topics
Parametric Curves
Vectors 3D (Three-Dimensional)
Linear Equations
Histogram
Parallelogram