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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
四邊形的特性
兩組對邊相等和有直角的四邊形
畫出對稱圖形
算柱 (兩位數)
Fibonacci Clock
Discover Resources
螺線相似正N邊形
圓族
基華小學 GeoGebra 幾何創作室 第 3 節
对数函数图像随底数变化的规律
畫圖用底圖(含輔助格線)
Discover Topics
Confidence Interval
Conic Sections
Random Variables
Constructions
Standard Deviation