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賺賠：例2的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
判斷球體
Fibonacci Clock
Earth with coastline
兩組對邊相等的四邊形
拼砌四邊形
Discover Resources
數線上的有理數
封閉區域著色２
area 面積3
七巧板（tangram）的副本
i love you的副本
Discover Topics
Geometric Distribution
Vectors 3D (Three-Dimensional)
Planes
Curve Sketching
Natural Numbers