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waaachen
Author:
陳兪宏
waaachen
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數（二）
錐體建築師
找出對稱軸
兩組對邊相等的四邊形
Discover Resources
馬奔跑
relations of pavlue fisher method
Measuring Volume 4
Area of a cricle by n-polygon
seven-eighths sphere 八分之七球面
Discover Topics
Vectors 2D (Two-Dimensional)
Geometric Transformations
Straight Lines
Ratios
Centroid or Barycenter