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Author:
孟宝兴
GeoGebra
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sanjiaohanshu
美國國旗 (Codex 版)
兩組對邊相等和有直角的四邊形
長方體平面投影 (Codex版)
找出對稱軸
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包含除法（整數或分數 ÷ 分數）
例題1【凹口性分析】
多物件逐一動畫
粒子的拋物線軌跡
數學電腦繪圖與解題
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Difference and Slope
Ratios
Square
Parametric Curves
Cone