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30度直角三角形
Author:
郭勇
GeoGebra
New Resources
柱體建築師
GeoGebra笔记功能体验课件
画直线等分三角形的面积
異分母分數減法
三位數除以一位數（二）
Discover Resources
題 6
ex 5
Physics
自由落体
正多邊形柱體表面積展開圖
Discover Topics
Differential Equation
Logarithmic Functions
Geometry
Sequences and Series
Geometric Transformations