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包絡線：橢圓
Author:
羅驥韡 (Pegasus Roe)
Topic:
Ellipse
GeoGebra
New Resources
第八周作业
三位數除以一位數（二）
直角坐標平面上的旋轉變換
球體建築師
兩位數加法
Discover Resources
something wrong...
七巧板
均分除法（整數÷整數）的副本
圖二 的複本
椭圆内切圆链
Discover Topics
Kite
Square
Division
Surface
Cone