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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
畫出對稱圖形
兩位數除以一位數(一)
三位數除以一位數(二)
判斷球體
球体的体积推导(优化版)
Discover Resources
佑玟ggb book
二元一次方程式圖形
Larry's Clock
扇形在射线上滚动
七巧板(tangram)的副本
Discover Topics
Step Functions
Matrices
Isosceles Triangles
Similar Triangles
Incircle or Inscribed Circle