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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
四邊形的特性
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
拼砌四邊形
GeoGebra笔记功能体验课件
Discover Resources
N邊形滾動
正方體的旋轉對稱
小圓外繞大圓
Copy of Factorization of Quadratic Polynomials (Table Method) 因式分解一元二次多項式（表格法）
sin(x) 的函數圖形的副本
Discover Topics
Bar Chart or Bar Graph
Tree Diagrams
Diagrams
Cuboid
Similar Triangles