See circlesigns for details. English applies to jurisdiction: United States of America determination method: work of the federal government of the United
This image is a derivative work of the following images: File:RU road sign 3.20.svg licensed with Cc-by-sa-3.0-migrated, GFDL 2010-07-26T08:28:07Z Юкатан
r*Sin[theta] Sin[phi], r*Cos[theta]}; (*Produce a circle of radius r offset in the z axis by z*) offsetCircle[r_, z_] := ParametricPlot3D[ {r*Cos[t], r*Sin[t]