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test geogebra 5.0
Author:
Ho-Kai Chen
only testing...
GeoGebra
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拼砌四邊形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
三位數除以一位數（一）
sanjiaohanshu
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平移動畫
掷骰子
Trigonometric Ratios of Any Angle
圓-符號核能
单叶双曲面-双叶双曲面
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Numbers
Surface
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Inequalities
Translation