Keywords: Concentric circles.jpg Circles with differing radii but the same center are concentric own enwiki 2006-10-13 Sikosm Sikosm Original upload log page en wikipedia Concentric_circles jpg 2006-10-13 08 47 Sikosm 541×541× 119526 bytes <nowiki>Circles with differing radii but the same centre are concentric</nowiki> Concentric circles |