梯形中线定理互动演示
2012-05-06 06:42
本 GeoGebra 范例演示梯形中线（中位线）定理的几何构造与性质。透过多边形、镜射（Mirror）、交点（Intersect）与线段等指令，构造梯形并标示两腰中点，连接形成中线。利用距离测量工具即时显示上底、下底与中线的长度，直观验证梯形中线平行于两底且长度等于两底和之半的定理。适合国中与高中几何教学，帮助学生理解梯形中线的几何意义与证明思路。
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多边形：GeoGebra互动几何学习资源
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