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拼圖遊戲
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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sanjiaohanshu
Fibonacci Clock
幾何作圖題：切三圓（題目）
美國國旗 (Codex, 2026.10.06)
伊朗國旗 (Codex╱2026.10.07)
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正弦公式(證明)
ie 8
學習單：三角形面積
ghseh 二次函數描點法上下平移-2
小学资源收集
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Triangles
Geometric Mean
Standard Deviation
Subtraction
Set Theory