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椭圆第一定义
Author:
wangyiyao
Topic:
Conic Sections
,
Ellipse
GeoGebra
New Resources
拼砌四邊形
畫出對稱圖形
三位數除以一位數（一）
GeoGebra笔记功能体验课件
錐體建築師
Discover Resources
橢圓軌跡 (2)
外心
面積認識
軸對稱的副本
圓錐曲線Conic Section
Discover Topics
Multiplication
Distributions
Area
Rotation
Geometric Transformations