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月球公轉軌跡及月相
Author:
ricky
GeoGebra
New Resources
圓的切線方程
盈利與虧蝕
圓的基本性質
探究三角形的全等條件
平行線的斜率
Discover Resources
正三角形
ptccs2new
王者荣耀官网
图中的三角形面积何时最小？（许兴华数学）
正三角形在长方形边上移动加滚动
Discover Topics
Trigonometric Functions
Arithmetic Operations
Geometric Transformations
Solids or 3D Shapes
Tangent Function