用向量法证明海伦公式

To prove Heron's Formula with the Vector

从数与形的角度对向量进行再认识,通过应用向量方法证明海伦公式,更进一步阐明了向量是沟通代数与几何的天然桥梁,是一个重要的数学模型,它能为解决问题提供新的方法和视角。

Recognized the vector from algebra and geometry and by proving Heron＇s Formula further expounds ,If shows thar the vector is a natural bridge between algebra and geometry, and it is an important mathematics style, and also provides the new method and view to solve the problems.