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橢圓內的光線反射 獻給聰哥
Author:
宋政蒲
Topic:
Ellipse
,
Reflection
橢圓內的光線反射
GeoGebra
New Resources
兩位數除以一位數（一）
拼砌四邊形
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
異分母分數減法
Discover Resources
空間畢氏定理
平行線(方格版)
正方体展开图的副本
旋轉正方形
y=ax^2的繪圖
Discover Topics
Vectors
Arithmetic Operations
Correlation
Indefinite Integral
Distributions