三角形外心的几何作图与性质演示
2018-03-09 01:59
本 GeoGebra 范例演示了三角形外心的几何作图过程及其基本性质。通过 Polygon 命令构建三角形 ABC，并利用 LineBisector 命令分别作出三角形各边的垂直平分线。最后，使用 Intersect 命令求出这些垂直平分线的交点 F，即三角形的外心。该动态模型直观地展示了无论三角形形状如何变化，其三边垂直平分线始终交于一点，有助于深入理解三角形外心的定义与几何特征。
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