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定周长的正多边形面积变化规律（含圆）
Author:
张英华
Topic:
Area
GeoGebra
New Resources
盈利與虧蝕
常见四边形是否是双心四边形
斜率的值
探究三角形的全等條件
折扣
Discover Resources
二次函數
對稱圖
假的龍珠
旋轉圓弧
二次函數的圖形的副本
Discover Topics
Circumcircle or Circumscribed Circle
Functions
Vectors 3D (Three-Dimensional)
Parametric Curves
Equilateral Triangles