Recent Additions to the Junkyard
These files and pointers have been added to the junkyard
or modified since 2011.
Dérivés
de l'hexagone . Art by Jerome Pierre based on modifications to the edges in a hexagonal tiling of the plane.
Robert Fathauer's Escher-like tesselation art .
Fractal knots , Robert Fathauer.
Frustro , a font made of Escherian impossible figures.
Gavrog , a Java package for
visualizing 2d and 3d ornamental patterns with high degrees of symmetry.
MagicTile .
Klein's quartic meets the Rubik's cube, by Roice Nelson.
Origami proof of the Pythagorean theorem ,
Vi Hart.
Seven
circle theorem , an applet illustrating the fact that if six circles
are tangent to and completely surrounding a seventh circle, then
connecting opposite points of tangency in pairs forms three lines that
meet in a single point, by Michael Borcherds.
Other applets by Borcherds
include Poncelet's
porism , a similar porism with an ellipse and a parabola and with two ellipses ,
and more generally with two conics of variable type .
Sierpinski Hamantaschen .
Tetrahedra
packing . Mathematica implementation of the Chen-Engel-Glotzer packing
of space by regular tetrahedra, the densest known such packing to date.
Wooden ball-and-stick models of Archimedean solids ,
offered for sale by Dr. B's Science Basics.
From the Geometry Junkyard ,
computational
and recreational geometry pointers.Send email if you
know of an appropriate page not listed here.David Eppstein ,
Theory Group ,
ICS ,
UC Irvine .Semi-automatically
filtered
from a common source file.
