EntityQ145830· pop 6· linked from 9 articlesGraticuleSign in to savegrid on a map, depicting a coordinate systemConnectionsmap projectionEntitycoordinate systemEntityspatial reference systemEntityLatinEntityMiddle AgesEntitygeographic coordinate systemEntityMuḥammad ibn Musa al-KhwarizmiEntitymapEntityPtolemyEntitylatitudeEntitylongitudeEntitycosmologyEntitycardinal directionEntityStraboEntityEratosthenesEntitydigital object identifierEntitymeridianEntitygeographic information systemEntitycircle of latitudeEntitycontour lineEntityCategoriesCartography