2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/113023This paper deals with surfaces with many lines. It is well-known that a cubic contains 27 of them and that the maximal number for a quartic is 64. In higher degree the question remains open. Here we study classical and new constructions of surfaces with high number of lines. We obtain in particular a symmetric octic with 352 lines.17 pagesAlgebraic GeometryPrimary 14N10; Secondary 14Q10text