%0 Journal Article %T Conics As Sections of Quadrics by Plane (Generalized Dandelin Theorem) %A Kheyfets, A.L. %K Dandelin theorem, Dandelin structure, Dandelin spheres, conic sections, quadrics, second-order surfaces, degree of point, parameterization, AutoCAD. %J Geometry & Graphics %D 2017 %N 5 %P 13 %I INFRA-M Academic Publishing LLC.