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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
【案例】2018年全国1卷理科12题
找出對稱軸
兩位數除以一位數（二）
異分母分數減法
小数 的副本
Discover Resources
上和與下和
題四
task5
四位數
面積 題目4
Discover Topics
Addition
Definite Integral
Stochastic Process or Random Process
Constructions
Set Theory