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Author:
chisunch1
GeoGebra
New Resources
算柱 (兩位數)
Fibonacci Clock
判斷球體
長方體平面投影 (Codex版)
拼砌四邊形
Discover Resources
電子幾何條（2014）
立體圖形的截面
坐标变换
拋物線定義
畢氏定理-切割法
Discover Topics
Cone
Angles
Reflection
Unit Circle
Linear Programming or Linear Optimization