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Reference Angle 參考角
Author:
Alex CHIK
Topic:
Trigonometry
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
【案例】2013年安徽高考15题
柱體建築師
球体的体积推导（优化版）
畫出對稱圖形
兩組對邊相等和有直角的四邊形
Discover Resources
兩物體在時間 0 ~ 1 間，碰撞判斷
Example 1
testing
圓與正方形中點軌跡1060317
圓周公式應用題1的副本
Discover Topics
Geometric Transformations
Cube
Hypothesis Testing
Median Value
Median Line