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lamanleung
GeoGebra
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長方體平面投影 (Codex版)
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幾何作圖題：切三圓（題目）
近似值：有效數字
伊朗國旗 (Codex╱2026.10.07)
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軌跡練習1
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圓周_心算題01
S0A4 线性规划与不等式区域
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