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e-learning task3
Author:
Dai xuan
GeoGebra
New Resources
美國國旗 (Codex 版)
Fibonacci Clock
Claude 解幾何題
近似值：有效數字
直角坐標平面上的旋轉變換
Discover Resources
电子表格建点
相同圖形的拼砌（三角形）
中研院數學所
Orthocentre
N-ellipse
Discover Topics
Subtraction
Secant Line or Secant
Symmetry
Plane Figures or Shapes
Mathematics