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多邊形的伸縮
Author:
rachmaninoff
GeoGebra
New Resources
球体的体积推导（优化版）
兩位數除以一位數（二）
兩位數加法
錐體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
Time
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
Life Examples of Quadratic Functions 生活中的二次函數
proof*5 張華炘
Angle between 2 planes in a cube
Discover Topics
Natural Numbers
Parametric Curves
Plane Figures or Shapes
Straight Lines
Centroid or Barycenter