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test geogebra 5.0
Author:
Ho-Kai Chen
only testing...
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（一）
找出對稱軸
拼砌四邊形
兩組對邊相等和有直角的四邊形
Discover Resources
parallelogram
橢圓動畫
九九乘法表
乘法的副本
立方体的11种展开图
Discover Topics
Translation
Subtraction
Logarithmic Functions
Quadratic Equations
Equations