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兩弦的長度比較
Author:
luke huang
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
判斷球體
拼砌四邊形
三位數除以一位數（二）
Discover Resources
四点共圆
角速度概念
銀杏葉
線性組合1：正六邊形
立體旋轉卡片
Discover Topics
Cone
General Quadrilateral
Prism
Upper and Lower Sum or Riemann Sum
Intersection