This image of simple geometry is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.
Heptagon
Orginal opplastningslogg
This image is a derivative work of the following images:
2008-01-09T22:24:18Z AlisonW 500x500 (2756 Bytes) == Beschreibung, Quelle == {{Information |Description= [[Überwerfungsbauwerk|'''Ü'''berwerfungsbauwerk]] '''o'''ben nach '''l'''inks |Source= selbst erstellt nach wikipedia-Vorlage |Author= [[Benutzer:axpde]] |Date= 28. Mai