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銳角三角：sin, cos
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
拼砌四邊形
柱體建築師
四邊形的特性
算柱 (兩位數)
畫出對稱圖形
Discover Resources
conjugate
猜猜平均數（限時版）
正弦與餘弦函數
一线三等角模型
滑动变阻器
Discover Topics
Fractal Geometry
Random Experiments
Real Numbers
Equations
Vectors 2D (Two-Dimensional)