公切线长度的计算
2012-05-06 14:09
本GeoGebra范例演示了如何计算两个圆的公切线长度。通过构造两个圆及其公切线，利用切线垂直于过切点的半径这一几何性质，结合勾股定理，动态展示公切线长度的推导与计算过程。范例涉及点、线段、圆、交点、切线、垂线及角度等几何对象的构造，帮助学习者直观理解圆与切线的几何关系及相关长度计算方法。
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