用斜投影法解决相交的几个问题

Using Oblique Projection Method to Solve Several Problems in Intersection

论述用斜投影法解决直线与平面、锥面相关 ,平面与斜棱锥、椭圆柱相交 ,正圆柱与椭圆柱轴线斜交等求交点、交线的作图问题。

This paper discusses several drawing problems as to the solution of intersection points and lines when straight line intersects plane and conical surface, plane intersects oblique pyramid and cylindroid, and the axial line of normal cylinder has skew intersection with the axial line of cylindroid.