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冰淇淋
Author:
Cathyyu920311
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兩組對邊相等和有直角的四邊形
找出對稱軸
異分母分數減法
拼砌四邊形
四邉形 (四年級) 教師版
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Quadratic Function Calculator 二次函數計算器
正弦定理
GeoGebra培训手册素材
切割正十二面體
GeoGebra绘本团队-绘本范例
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Geometry
Quadratic Equations
Quadratic Functions
Surface
Square