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陳兪宏
阿凱老師的幾何問題
GeoGebra
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GeoGebra笔记功能体验课件
畫出對稱圖形
三位數除以一位數（一）
錐體建築師
兩組對邊相等的四邊形
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function
畫方格
How to draw a heptagon with ruler andcomp…
線性規劃
基础知识
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Multiplication
Geometric Transformations
Parabola
Tangent Line or Tangent
Scalene Triangles