%0 Journal Article %T New Problems of Descriptive Geometry. Continuation %A Girsh, A.G. %K analytical figure; zero-circle; imaginary addition; left isotrope; right isotrope; circular zero-cylinder; null-cylinder disintegration; isotropic planes; isotropic cone %J Geometry & Graphics %D 2022 %N 9 %P 7 %I INFRA-M Academic Publishing LLC.