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二元一次
Author:
張閎
GeoGebra
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錐體建築師
拼砌四邊形
異分母分數減法
【案例】2013年安徽高考15题
三位數除以一位數（一）
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雙曲線軌跡 (1)
Addition of 2 Directed Numbers
聯動鐘面
例題1【凹口性分析】
直角坐標的旋轉變換
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Similarity Transformation or Similarity
Square
Solids or 3D Shapes
Trapezium
Diagrams