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cherry910502
GeoGebra
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美國國旗 (Codex, 2026.10.06)
Nested spiral octagon
Earth with coastline
幾何作圖題：切三圓（題目）
直角坐標平面上的旋轉變換
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內外切圓
区域面积
Quiz on Scientific Notation
正圆锥展开图
勾股定理介绍及证明
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Normal Distribution
Cylinder
Coordinates
Vectors
Variance