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重心 內心 外心 垂心
Author:
26黃國修
GeoGebra
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比較五件物件的重量
盈利與虧蝕
科赫雪花
异形操场
三角函数 的副本
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达布和
付款
笛卡兒之心
旋轉圓弧62326 劉虹圻
鉛筆畫圓
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Differential Calculus
Conic Sections
Tangent Function
Solids or 3D Shapes
Histogram