Image: Geomagic square - self-tiler

Description: A geomagic square whose 16 pieces form a 'self-tiling tile set'. The latter is any set of n distinct shapes, each of which can be tiled by smaller replicas of the complete set.
Title: Geomagic square - self-tiler
Credit: http://www.geomagicsquares.com/gallery.php?page=62
Author: Lee Sallows
Permission:   This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page. Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by an OTRS member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2013080610009236. If you have questions about the archived correspondence, please use the OTRS noticeboard. Ticket link: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom&TicketNumber=2013080610009236
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes