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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
三位數除以一位數（一）
判斷球體
找出對稱軸
GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
Discover Resources
階梯函數
Elementary school math
Triangle
兩位數除三位數(商=10)
時距計算機 (時針改變)
Discover Topics
Frequency Distribution
Equilateral Triangles
Pythagoras or Pythagorean Theorem
Binomial Distribution
Definite Integral