【摘要】 运用斜投影法解决直线与平面、直线与锥面、平面与斜棱锥、平面与椭圆柱、正圆锥与椭圆柱等相交 ,求交点、交线的作图问题更多还原

【Abstract】 This paper discusses several drawing problems as solution of intersection points and lines when a straight line intersects plane or conical surface, a plane intersects oblique pyramid and cylindroid and the axial line of normal cylinder has skew intersection with the axial line of cylindroid.更多还原