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圖四
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩位數加法
兩組對邊相等的四邊形
錐體建築師
兩位數除以一位數（一）
四邊形的特性
Discover Resources
量角器
公開
正六角錐(旋轉，實體、透視)
gltzk 長方體表面的最短距離
分数加法 Fraction Addition
Discover Topics
Hyperbola
Integral Calculus
Centroid or Barycenter
Multiplication
Fractal Geometry