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jinwen
GeoGebra
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四邊形的特性
Earth with coastline
小数 的副本
美國國旗 (Codex, 2026.10.06)
幾何作圖題：切三圓（題目）
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圓周 (圖形D)
test03繪本用
gct-a01-jc091v1-27 三角形旋轉
Measuring Volume 5
project euler202（反射光线路线数）
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Numbers
Perimeter
General Quadrilateral
Square
Pythagoras or Pythagorean Theorem