This image was uploaded with an opaque background where it should have been transparent. If possible, please upload a PNG or SVG version of this image, derived from a non-JPEG source so that it has an alpha channel and no compression artifacts (or with existing artifacts removed). If it is not possible to obtain a cleaner version then consider creating a new, derivative, image with the background removed, while leaving this image alone; use templates such as {{Retouched picture}} and {{Derivative versions}} as appropriate; then ignore the rest of these requests. After doing so, please:
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.
Original upload log
The original description page was here. All following user names refer to en.wikipedia.