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平行四邊形與三角形
Author:
李春培
Topic:
Area
平行四邊形與三角形
GeoGebra
New Resources
找出對稱軸
錐體建築師
兩位數加法
拼砌四邊形
三位數除以一位數（二）
Discover Resources
Line Perpendicular to Plane 垂直於平面的直線
二次函數
單向函數
函数作图工具的副本
海螺
Discover Topics
Solids or 3D Shapes
Normal Distribution
Incircle or Inscribed Circle
Indefinite Integral
Circumcircle or Circumscribed Circle