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國旗
Author:
min
GeoGebra
New Resources
畫出對稱圖形
兩位數除以一位數（一）
找出對稱軸
異分母分數減法
兩組對邊相等和有直角的四邊形
Discover Resources
擴分和約分
四下_認識小數(教師版)
正方形和長方形有甚麼特性？的副本
四邊形的「等角分點」的副本
How to draw a pentagon with ruler and compasses?
Discover Topics
Median Value
Poisson Distribution
Equilateral Triangles
Surface
Kite