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Author:
季阳天
关灯游戏
GeoGebra
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美國國旗 (Codex, 2026.10.06)
幾何作圖題：切三圓（題目）
sanjiaohanshu
算柱 (兩位數)
找出對稱軸
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絕對值距離和
初犯九點圓
中心对称
堆垛
椭圆的一种画法.许兴华数学
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Pythagoras or Pythagorean Theorem
Rectangle
Fractions
Prism
Translation