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銳角三角：sin, cos
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
拼砌四邊形
異分母分數減法
畫出對稱圖形
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
Discover Resources
橢圓軌跡
HW3.NationalFlag
從 12 面體、20 面體到 C60 C80
Angle between a Line and a Plane
活工(二)Q1
Discover Topics
Interest Calculation
Definite Integral
Arithmetic Operations
Solids or 3D Shapes
Cosine