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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
第八周作业
畫出對稱圖形
兩位數除以一位數（一）
sanjiaohanshu
兩組對邊相等和有直角的四邊形
Discover Resources
test
塗鴉
Copy of 固定周界的長方形的面積變化
立體圖形的截面
Αντιγραφή του Apollonius Problem gergonne 3
Discover Topics
Definite Integral
Similar Triangles
Integral Calculus
Power Functions
Differential Equation