EntityQ1921708· pop 9· linked from 170 articlesmeridian arcSign in to saveseries of accurate measurements to determine the shape of a meridianConnectionslatitudeEntityGrade measurementEntitymetreEntitycurveEntitycircular sectorEntityJean-Baptiste Joseph DelambreEntityEarth radiusEntityelliptic integralEntityreference ellipsoidEntityParis meridianEntityWorld Geodetic SystemEntityMontjuïc CastleEntityFrench Geodesic MissionsEntityUnited KingdomCountryParisEntityIsaac NewtonPersonMediterranean SeaEntityBaghdadCityBarcelonaEntityFrench GuianaEntityCategoriesGeodesyHistory of measurementMeridians (geography)