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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
判斷球體
拼砌四邊形
兩組對邊相等和有直角的四邊形
柱體建築師
球體建築師
Discover Resources
waaachen
Spotlight 探射燈
漂亮ㄉ東東
謝爾冰司機-正方形
线面g
Discover Topics
Equations
Upper and Lower Sum or Riemann Sum
Integers
Parametric Curves
Line Segment