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黃金矩形
Author:
王廷祐
GeoGebra
New Resources
直角坐標平面上的旋轉變換
【案例】2013年安徽高考15题
錐體建築師
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
優良作品2(孟倫)
trigonometry1
平行四邊形
大斜方
密鋪8
Discover Topics
Vectors
Straight Lines
Statistical Characteristics
Geometric Transformations
Linear Programming or Linear Optimization