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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（二）
四邊形的特性
兩組對邊相等和有直角的四邊形
錐體建築師
異分母分數減法
Discover Resources
磁磚著色
探究余弦定理
橢圓的切線作圖
龜甲
数学几何
Discover Topics
Orthocenter
Arithmetic Operations
Volume
Percentages
Parallelogram