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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
錐體建築師
三位數除以一位數（一）
四邉形 (四年級) 教師版
找出對稱軸
兩位數除以一位數（二）
Discover Resources
Binomial Formula
Is this a prism 6
教學成果
仰角和俯角
螺旋线
Discover Topics
Cosine
Polygons
Pythagoras or Pythagorean Theorem
Ratios
Conic Sections