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农大
Author:
韩红宇
Topic:
Circle
GeoGebra
New Resources
兩位數加法
拼砌四邊形
球体的体积推导（优化版）
判斷球體
畫出對稱圖形
Discover Resources
三角形外角和=360⁰
Easter egg
廣義角的代換(180,360)
分1
基础知识
Discover Topics
Surface
Indefinite Integral
Reflection
Geometric Mean
Centroid or Barycenter