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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
柱體建築師
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
判斷球體
第八周作业
Discover Resources
例題6
優良作品2
兩直線+圓
不規則圖形的周界(step3)
圓錐(可改底面圓半徑、錐體高)
Discover Topics
Polygons
Unit Circle
Statistics
Quadrilaterals
Equilateral Triangles