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Author:
張道民
GeoGebra
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中華民國國旗 (Codex╱2026.10.06)
畫出對稱圖形
幾何作圖題：切三圓（題目）
直角坐標平面上的旋轉變換
美國國旗 (Claude 版)
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垂心
conjugate
配方法 Completing the Square
點與圓的關係
小四_小數的認識
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Constructions
Solids or 3D Shapes
Angles
Median Value
Natural Numbers