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三角形的外心
Author:
林詩庭
GeoGebra
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伊朗國旗 (Codex╱2026.10.07)
幾何作圖題：切三圓（題目）
長方體平面投影 (Codex版)
美國國旗 (Codex 版)
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Apollonius Problem 10 CCC wiki step 3
Incentre
Copy of 畢式定理 (06)
earth
折扣
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Inequalities
Cone
Difference and Slope
Dilation
Multiplication