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拋物線2--焦點法
Author:
16楊杰
GeoGebra
New Resources
異分母分數減法
球體建築師
GeoGebra笔记功能体验课件
畫出對稱圖形
兩位數除以一位數（一）
Discover Resources
fsfafasfas
Liu Hui's Method of Finding π
四角柱(底面為可調整梯形)
勾股定理
homework
Discover Topics
Addition
Differential Calculus
Polygons
Secant Line or Secant
Parallelogram