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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
球體建築師
找出對稱軸
拼砌四邊形
柱體建築師
兩位數除以一位數（一）
Discover Resources
題六
Similar triangles inscribed iteration
包含除法（整數÷整數）
v中點座標軌跡(圓大正多邊形小)
三角形三边关系探究
Discover Topics
Right Triangles
Planes
Sequences and Series
Tangent Line or Tangent
Volume