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橢雙
Author:
Aleck Chang
GeoGebra
New Resources
撒针估算面积实验
盈利與虧蝕
圓的基本性質
折扣
平行線的判定
Discover Resources
畫三角形 題4a
Apollonius Problem 6 CLP Inversion 34
相似三角形
Copy of 劉徽的「割圓術」
Copy of 三角形的面積
Discover Topics
Statistics
Trigonometry
Sine
Linear Equations
Complex Numbers