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illusion若隐若现的白点（星海）
Author:
吴兴海
GeoGebra
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美國國旗 (Codex 版)
Nested spiral octagon
湖南省张毅郴数字教研工作室 logo
中華民國國旗 (Codex╱2026.10.06)
直角坐標平面上的旋轉變換
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複雜的解法
正弦定理
利用sequence指令在大圓上畫12個小圓
Similar triangles inscribed iteration
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Right Triangles
Arithmetic Operations
Integers
Differential Equation
Matrices