KONSTRUKTION DER KONTUREN SPEZIALER GERADER UND SCHIEFER KREISKONOIDEN

Abstract

Contruction of the contour of special straight and oblique circular conoids The study describes the special case of the circular conoids for which the tangent planes of the generatrices varying from point to point are constructable. In this case, for the orthogonal projections, on the isometrie and perspective figures one can construct that point of a generatrix where the tangent plane becomes a projection plane in the chosen representation system and at the same time it is the contour-point of the generatrix. The solution of the problem is illustrated with figures.