变化的三角形的外心
2019-12-29 04:36
本GeoGebra范例动态演示了三角形外心的性质与位置变化。通过拖动顶点改变三角形形状，可直观观察外心（三边垂直平分线的交点）及外接圆的动态变化。范例运用了垂直平分线、圆和多边形等几何构造，清晰展示了锐角、直角和钝角三角形中外心位置的差异，适用于平面几何中三角形外心与外接圆定理的教学与探究。
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