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拋物面的光學性質
Author:
宋政蒲
GeoGebra
New Resources
算柱 (兩位數)
找出對稱軸
四邊形的特性
兩位數除以一位數（一）
拼砌四邊形
Discover Resources
圓周 (圖形I)
ie 7
多項式函數的遞增與遞減(分段塗函數顏色)
平行四邊形的面積 的複本
長方體的體積
Discover Topics
Numbers
General Quadrilateral
Mathematics
Upper and Lower Sum or Riemann Sum
Parabola