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三视图1
Author:
杨欣霞
GeoGebra
New Resources
判斷球體
球体的体积推导（优化版）
異分母分數減法
拼砌四邊形
畫出對稱圖形
Discover Resources
國中(1-1等線段作圖)
Example 6.1
happy planet
基測會考數學
分数加法 Fraction Addition
Discover Topics
Multiplication
Similar Triangles
Area
Vectors 3D (Three-Dimensional)
Piecewise Functions