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鏡面反射光線
Author:
紀老師
鏡面反射光線的動畫 入射角=反射角
GeoGebra
New Resources
判斷球體
兩位數加法
畫出對稱圖形
兩位數除以一位數（一）
異分母分數減法
Discover Resources
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
齊來製作對稱圖
Copy of 圓方程 (標準式與一般式)
BkD_act15_03c
作业1
Discover Topics
Secant Line or Secant
Curve Sketching
Power Functions
Circumcircle or Circumscribed Circle
Division