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優良作品4
Author:
Ching-Hui Chou
GeoGebra
New Resources
四邊形的特性
拼砌四邊形
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
異分母分數減法
Discover Resources
畢式定理（丞昀）
畢式定理 (04)
單一物件分段移動
angle in semi-circle
三等分点连线围成的三角形特征（唐老师）
Discover Topics
Boxplot
Circumcircle or Circumscribed Circle
Linear Programming or Linear Optimization
Vectors 3D (Three-Dimensional)
Secant Line or Secant