正交圆柱圆锥相贯线最右点的确定及证明

THE DETERMINE AND PROVE OF THE RIGHTEST POINTS ON RUN THROUGH LINE WITH EACH OTHER STRAIGHT JOINED CYLINDER AND CIRCULAR CONE

以解析法求得正交圆柱圆链相贯线上最右（左）点的坐标值及这些点到坐标原点的距离，进而得出在投影图中求解这些极值点的两种既简单又准确的作图方法。并阐述了这两种作图方法的画法几何理论依据。

The paper solved the coordinate value of the rightest points(leftest) on run through line with each other straight joined Cylinder and Circular Cone by analytic way and the distance from the points to the original point.Two simple and accurate drawing-making methods were reached by solving the extreme value points in projected picture.Finally the paper expounded on the basis of the theory of descriptive geometry about two ways.