计算圆弧长度
2019-05-14 00:53
本范例演示了如何计算圆的圆弧长度。通过构造圆、点、射线和圆弧，结合旋转和交点等几何操作，直观地展示了圆弧的几何特征及其长度的计算方法。适用于学习圆的基本性质和弧长公式的几何意义。
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