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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
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
判斷球體
算柱 (兩位數)
三位數除以一位數（一）
Discover Resources
方格紙上畫長方形1
圖D
Origami-Trisect An Angle
Copy of 固定周界的長方形的面積變化
正方形雪花图案
Discover Topics
Combinatorics
Functions
Pythagoras or Pythagorean Theorem
Incircle or Inscribed Circle
Logic