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椭圆内部全等的双椭圆构造.许兴华数学
Author:
许兴华数学
Topic:
Conic Sections
GeoGebra
New Resources
球体的体积推导
畫出對稱圖形
兩位數除以一位數（二）
三位數除以一位數（一）
GeoGebra笔记功能体验课件
Discover Resources
畫圓
圓周 (圖形F)
選擇合適的「中間人」
分數認識
等腰三角形 － 等角對等邊的副本
Discover Topics
Parallelogram
Correlation
Perimeter
Arithmetic Mean
Stochastic Process or Random Process