TY JOUR TI General Analysis of the Shape of Two Similar Second-Order Surfaces’ Intersection Line KW quadric KW conic KW fourth-order spatial curve KW degenerate quadric KW surface classification KW shape parameters KW relative position’s parameters KW forming curves KW guiding curves JO Geometry & Graphics AU Ivaschenko, A.V. AU Vavanov, D.. PY 2020 IS 8 PB INFRA-M Academic Publishing LLC.