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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
判斷球體
Fibonacci Clock
Claude 解幾何題
球體建築師
美國國旗 (Claude 版)
Discover Resources
應用導數繪製函數圖形
路徑二動畫
圓周 (圖形F)
blue
愛心立體圖
Discover Topics
Vectors
Upper and Lower Sum or Riemann Sum
Arithmetic Operations
Rotation
Statistical Characteristics