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椭圆的定义作图（许兴华数学）
Author:
许兴华数学
Topic:
Conic Sections
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（二）
四邊形的特性
找出對稱軸
判斷球體
Discover Resources
圖解定理公式與切割組合
平行四邊形
梯形有甚麼特性？
[S3] a GeoGebra file created by a pre-service teacher Peter (pseudonym)
折線
函数作图工具的副本
Discover Topics
Circle
Indefinite Integral
Numbers
Ellipse
Square