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Author:
周高飞
Topic:
Mathematics
GeoGebra
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四邊形的特性
兩組對邊相等的四邊形
找出對稱軸
柱體建築師
三位數除以一位數（一）
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三角形內角和
極線對偶定理 / polar duality theorem
TRY_4.11.2016
五複合正6面體
GeoGebra合作伙伴关系
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Circle
Arithmetic
Differential Calculus
Polynomial Functions
Trigonometry