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NestedSquare_spreadsheet
Author:
Peng-Jen Lai 賴鵬仁
GeoGebra
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伊朗國旗 (Codex╱2026.10.07)
畫出對稱圖形
長方體平面投影 (Codex版)
幾何作圖題：切三圓（題目）
中華民國國旗 (Codex╱2026.10.06)
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賴尚欣_等差數列與級數_排數字
angles sum of a triangle 1
四角柱算體積(可以切開)
我的第一个绘本
正方形折纸减去两角
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Tangent Function
Kite
Root
Correlation
Differential Equation