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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
画直线等分三角形的面积
球體建築師
GeoGebra笔记功能体验课件
【案例】圆柱体内放置一个大球六个小球
Discover Resources
PreEnigma-1
平行線
線外一點
三角形面積
橢圓的副本
Discover Topics
Vectors 3D (Three-Dimensional)
Histogram
Percentages
Translation
Equations