四面体（三棱锥）的外接球构造与演示
2019-03-17 09:52
本 GeoGebra 范例演示了四面体（三棱锥）外接球的几何构造过程。通过定义四个顶点 A、B、C、D 构建三棱锥，并生成其各个面（如面ABC、面ABD等）与棱边。在此基础上，利用球面（Sphere）命令构造经过该四面体所有顶点的唯一外接球。该模型直观展示了立体几何中多面体与球面的位置关系，适用于高中或大学解析几何与立体几何的教学，帮助学生理解外接球球心的空间位置及其半径的几何意义。
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