Sakaki, MakotoUcum, AliIlarslan, Kazim2020-06-252020-06-252017closedAccess0009-725X1973-4409https://doi.org/10.1007/s12215-016-0287-1https://hdl.handle.net/20.500.12587/6828In the present paper, we discuss the geometric properties of two classes of ruled surfaces whose directrix curve is a bi-null curve in semi-Euclidean space R-2(5). We get some classes of flat marginally trapped surfaces in R-2(5).eninfo:eu-repo/semantics/closedAccessRuled surfacesBi-null curvesSemi-Euclidean spaceMarginally trapped surfacesArticle66348549310.1007/s12215-016-0287-12-s2.0-85035103821Q1WOS:000415763900020N/A