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圆的面积展开的副本
Author:
chy198
,
qianqianhouhou
拖动n分圆，拖动展开展开圆，拖动拼图拼成长方形。
GeoGebra
通过上面操作请推导圆的面积公式。
New Resources
双心四边形
圓的切線方程
探究三角形的全等條件
直線的斜率
多邊形的面積
Discover Resources
內切圓半徑證明
黎曼和
正方形與長方形
公平的切蛋糕 Selfridge-Conway 免嫉妒分法(envy-free cake-cutting)
折叠问题一例
Discover Topics
Expected Value
Linear Programming or Linear Optimization
Quadrilaterals
Percentages
Means