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買四送一
Author:
周錦鋒
GeoGebra
New Resources
三半圓間的相切圓(Codex╱2026.10.07)
畫出對稱圖形
找出對稱軸
美國國旗 (Codex 版)
算柱 (兩位數)
Discover Resources
幾何原理
三角形及多邊形
圓周 (圖形I)
tool1
test02
Discover Topics
Tangent Line or Tangent
Definite Integral
Angles
Area
Differential Equation