几何作图：构造线段与角
2020-04-22 09:16
本GeoGebra范例演示了基础的几何作图方法，主要展示如何使用点、圆、线段和交点等工具构造线段与角。通过步骤控制和文本提示，引导用户逐步完成平面几何图形的构建，适合初学者学习尺规作图的基本原理与操作。
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① 作1条直线，在上取一点A""/>
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② 以A为圆心、a为半径作圆，交直线于B""/>
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③ 线段AB=a，即为所求。""/>
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