DescriptionHelicoid.svg English: Helicoid curve with 'a = 1'. Date 20 May 2011 Source Own work Author Krishnavedala SVG development InfoField The SVG code
commons: Shazz pl.wiki: Shazz Polski: Sierpik Deutsch: Schraubel English: HelicoidSVG based on: Danielm's png image This W3C-unspecified vector image was
La bildo estas kopiita de wikipedia:en. La originala priskribo estas: A helicoid. This image was made by AugPi using Mathematica. (c) AugPi, 2004. Licensed
DescriptionWendelfl-regelfl.svg Deutsch: Wendelfläche als Regelfläche English: helicoid as ruled surface Date 28 August 2018 Source Own work Author Ag2gaeh