**Junk Kato's Triangle** -- Solvers

David Molnar

Serhit Grabarchuk -- I attach my solution to Junk Kato's Origamic puzzle; this
is a little puzzle gem indeed. I enjoyed solving it very much. Thanks!

Aram Hakobyan

Bill Daly

Bruce A. Feldmeyer

Nick Baxter

Robert Henderson

Koshi Arai

Naoaki Takashima -- I have to write a comment
on my twelve basic solutions for a triangle folding into a tetrahedron:

The original problem Junk posed for Ed's mathpuzzle site is required the solution
with "only three folding lines" to make tetrahedron from 2-3-4 triangle. But
my study was done without this condition. Among the twelve basic solutions,
only one solution by principle II(1) has three folding line which is the solution
of original problem already shown by Ed in his page.

Martin Demaine -- I have been working on the same problem. See our page on Folding
Polygons into Polytopes: http://daisy.uwaterloo.ca/~eddemain/aleksandrov/

Koichi Hirata -- wrote an excellent program
to compute the 'gluings' (where the edges match up) of a given polygon into
a convex polyhedra. http://weyl.ed.ehime-u.ac.jp/cgi-bin/WebObjects/Polytope2

http://www.ed.ehime-u.ac.jp/~hirata/