图解证明单叶双曲回转面截交线的性质

The property of the uniparted hyperboloid of the section line was proved for the graphical method

平面与单叶双曲回转面相交 ,其截交线可能为椭圆、抛物线或双曲线 ,这一性质可由解析法证明 ,本文提出用图解法来证明 ,以开扩思路 。

As the plane and the uniparted hyperboloid intersect,the section line may be the ellipse,the parabola or the hyperbola.The property was proved for the analysis.In this paper,the property was proved for the graphical method.It branched off the thread.