%0 Journal Article %T Generalized Dandelin’s Theorem Implementation for Arbitrary Rotation Quadrics in AutoCAD %A Kheyfets, A.L. %A Vasileva, V.. %K Dandelin’s sphere, Dandelin’s balls, conic sections, conics, second order curves, quadrics, second order surfaces, directrix, parameterization, AutoCAD. %J Geometry & Graphics %D 2014 %N 2 %P 5 %I INFRA-M Academic Publishing LLC.