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旋轉長方形
Author:
王廷祐
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
三位數除以一位數（二）
拼砌四邊形
Discover Resources
文氏圖
二維碰撞
How to draw a hexagon with ruler and compasses?
Net of prism
繪畫梯形
Discover Topics
Exponential Functions
Centroid or Barycenter
Optimization Problems
Arithmetic Mean
Tree Diagrams