尺规作图：平分线段与角的交互式构造演示
2020-04-22 12:27
本 GeoGebra 范例通过经典尺规作图方法，分步骤演示如何平分一条线段和一个角。构造过程使用圆（模拟圆规）画弧、取交点，再通过射线得到角平分线或线段中点。用户可拖动滑块控制圆弧半径，直观观察每一步的几何原理与理论依据。涵盖 Polygon、Circle、Intersect、Ray 等核心命令，适合初中几何入门教学，帮助学生理解平分线与中垂线的构造逻辑。
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<keepTypeOnTransform val="true"/>
</element>
</construction>
</geogebra>