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折射率的定義
Author:
Jia-ming Shiu
可以移動G、E、F 看出折射率的算法
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（二）
錐體建築師
GeoGebra笔记功能体验课件
畫出對稱圖形
Discover Resources
glt-c05-05 正四角錐旋轉
題六
solid of revolution
compare angle by Mr LO WY
Quiz on Solving One-step Linear Equations (1)
Discover Topics
Secant Line or Secant
Equilateral Triangles
Rotation
Perimeter
Upper and Lower Sum or Riemann Sum