圆的周长展开动态演示
2020-04-24 06:05
本GeoGebra范例动态演示了圆的周长展开过程。通过几何作图与变换（如旋转、平移、向量等），将圆周拉直为一条线段，直观地展示了圆的周长与直径或半径之间的关系，有助于理解圆周率的几何意义及弧长计算公式。适合中学数学教学中的几何测量部分。
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