We understand that Geometry is the instrument that orders the disorder of the urban transformations, those which generally respond to partial planning or to random dispositions. Geometry designed models allows to work with the urban complexity, on possible variants, searching the cohesion in intentional heterogeneous terms between central and periphery areas. In this work, we propose a morphologic criterion concerning urban development and its relationship with the geometry of its plan. It is a proposition of urban strategic planning in terms of orderly alternative design. We have verified the relationship between the theoretical and the analytical proposition compared with the existing situations. The problematic is situated in periphery of urban sectors and proposes, according with the results of the case studied, new possibilities of interpretation.