面动成体：直角三角形旋转生成圆锥的三维演示
2020-07-19 05:55
本GeoGebra范例生动演示了“面动成体”的几何原理，具体展示直角三角形绕其一条直角边旋转一周形成圆锥的过程。通过滑块控制旋转角度与底面半径，结合多边形、圆弧与曲面命令，直观呈现圆锥的生成机制、空间结构及高与底面半径的关系，帮助学生建立立体几何的空间想象力。
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