Keywords: Torus with seven colours.svg en wikipedia 2009 July 19 By joining the single arrows together and the double arrows together we get a torus with seven mutually touching regions Por juntar las dos flechas solas y juntar las dos flechas dobles se crea un toro con siete regiones que cada una de las cuales toca a cada otra Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Skiff using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper 2006-08-03 Original uploader was Cbuckley at http //en wikipedia org en wikipedia Released into the public domain by the author en wikipedia Cbuckley Original upload log page en wikipedia Torus_with_seven_colours svg 2006-08-03 00 05 Cbuckley 991×450 1964 bytes <nowiki>Uploaded new version of Image Torus-with-seven-colours png </nowiki> Tilings including quadrilaterals Four-color theorem |