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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
找出對稱軸
美國國旗 (Codex 版)
湖南省张毅郴数字教研工作室 logo
國旗 (Claude 版)
國旗 (作圖步驟直接餵給 Claude)
Discover Resources
餘弦定理的圖形證明
angle
線型函數與圖形
圓內接正N邊形
函数作图工具的副本
Discover Topics
Natural Numbers
Definite Integral
Angles
Trapezoid
Pythagoras or Pythagorean Theorem