An Helix is a diagonal of a rectangle wrapped around a cylinder

[url=http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/HelixcylMD.html]http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/HelixcylMD.html[/url]
– Daniel Mentrard

Information: An Helix is a diagonal of a rectangle wrapped around a cylinder