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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
拼砌四邊形
找出對稱軸
四邉形 (四年級) 教師版
Discover Resources
畢氏定理的證明
平行四邊形對角線
心臟線
向量的座標變換矩陣與線性組合
五邊形
Discover Topics
Interest Calculation
Tangent Function
Circle
Trigonometric Functions
Definite Integral