Synopsis: These are imaginary lines through which the earth was "cut" these lines are the parallels and meridians, through parallels and meridians is possible to establish precise locations anywhere on the planet. The geographical coordinates are formed by latitude and longitude.
Source: Government of the State of Paraná.
URL: http://www.geografia.seed.pr.gov.br/modules/galeria/detalhe.php?foto=1059&evento=1