Keywords: 20-crossings-ornamental-knot.svg A decorative knot with 20-crossings and five-fold rotational symmetry a variation on a design in George Bain's Celtic Art The Methods of Construction but made with circular arcs and straight lines only For a version with three-fold symmetry see File 12crossing-decorative-knot-triskele svg Self-made image converted from a version of the following vector PostScript source code <pre> 306 396 translate/x 93 2 def/y 90 def 5 194 15 100 x sub x -72 90 arc -72 6542528 100 y add y 270 -18 arcn -11 521 18 sin mul -11 521 18 cos mul rlineto stroke 144 rotate repeat showpage EOF</pre> 2012 AnonMoos thumb center 15 thumb center 25 20 crossing number knots and links Decorative knots Knots knot theory 5-fold rotational symmetry Images with PostScript source code Knots and links on transparent background Celtic knots Outline knots and links Round graphic ornaments |