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Introduction to Trigonometry from a Unit Circle
Author:
Lam Yat Chun
GeoGebra
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GeoGebra笔记功能体验课件
【案例】2013年安徽高考15题
畫出對稱圖形
三位數除以一位數（二）
找出對稱軸
Discover Resources
橢圓
AREA
圓與三角形的中點軌跡
四邊形外接正方形
limit of function f(x)=x^2
Discover Topics
Line Segment
Parallelogram
Exponent
Complex Numbers
Parametric Curves