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Author:
Antony Chan
Testing 2 (Addition of vectors)
GeoGebra
New Resources
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
Discover Resources
座標工具檔
拋物線之極偶 / polarity for parabola
Why same areas?
三角形面積公式B2
f(x)=ax^2
Discover Topics
Natural Numbers
Rhombus
Geometric Distribution
Complex Numbers
Normal Distribution