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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
兩組對邊相等的四邊形
異分母分數減法
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
四邉形 (四年級) 教師版
Discover Resources
等差數列等差數列
複合圖形(五)
角度
外面有圓
Multiplication of Polynomials(多項式的乘法)
Discover Topics
Statistical Characteristics
Set Theory
Perimeter
Integers
Geometric Mean