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抛物线的参数方程
Author:
梁航宇
GeoGebra
New Resources
球體建築師
兩位數除以一位數（二）
算柱 (兩位數)
三位數除以一位數（一）
畫出對稱圖形
Discover Resources
擴分和約分
Angle Sum of Pentagon (SWC)
直線排列1
拋物線2--焦點法
三角形重心的变化.许兴华数学
Discover Topics
Natural Numbers
Functions
Area
Linear Equations
Equilateral Triangles