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三角
Author:
朱宜萱
GeoGebra
New Resources
球體建築師
兩組對邊相等的四邊形
球体的体积推导（优化版）
柱體建築師
畫出對稱圖形
Discover Resources
希式半月形的變形
光的折射（光线自右下向左上）
Copy of 固定周界的長方形的面積變化
正十二面體展開圖
切线
Discover Topics
Coordinates
Square
Tangent Function
Vectors 3D (Three-Dimensional)
Quadratic Equations