圆柱与圆锥、圆锥与圆球相贯线特殊点的解析和图解

The Solution to the Rightest and Leftest Points of the Intersecting Line between a Circular Cone and a Cylinder and between a Circular Cone and a Globe

给出了相贯线正面投影和水平投影的数学表达式，从而确定了相贯线特殊点的坐标，并由此得出用图解法作出该点的简捷方法。

This paper presents the mathematic expression of the front projection and the horizontal projection of the intersecting line between a circular cone and a cylinder,a circular cone and a globe so as to determine the coordinate of the rightest and leftest points of the intersecting line so that a simple method of drawing these points can be obtained.