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三角形内角和
Author:
谢鹏
GeoGebra
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sanjiaohanshu
直角坐標平面上的旋轉變換
Claude 解幾何題
中華民國國旗 (Codex╱2026.10.06)
幾何作圖題：切三圓（題目）
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a sin(bx+c) +d
三角形3,4,5
利用邊對摺找三角形的內心
圓與正三角形上動點連線上中點的軌跡
星形工具(1060724)
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Upper and Lower Sum or Riemann Sum
Addition
Planes
Matrices
Arithmetic