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robinson_triangle
robinson_triangle
https://web.archive.org/web/20090524004703/http:/tilings.math.uni-bielefeld.de/substitution_rules/robinson_triangle
Golden triangle (mathematics)
Link from a Wikipage to an external page
robinson_triangle
https://web.archive.org/web/20090524004703/http:/tilings.math.uni-bielefeld.de/substitution_rules/robinson_triangle