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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
錐體建築師
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
第八周作业
Discover Resources
祖恒原理
Rectangle _03
gltyz 斜圓錐
gjc090c21內切圓的圓心
線性規劃
Discover Topics
Polynomial Functions
Expected Value
Scalene Triangles
Tangent Line or Tangent
Optimization Problems