# Making the Modules

Introduction --
Making the Modules --
Making the Polyhedra --
Jim's Origami Page

All of the ``penultimate'' modules have the same basic form and
functionality. Each module will end up being an edge on the resulting
polyhedron, and it will hook up with four other modules. It is inserted
into two of these other modules, and the remaining two modules are inserted
into it.
Each module is responsible for mainting the proper angle with
the two edges into which it is inserted, and it is by folding the modules
to have the proper angles that the various polyhedra are made. The above
description will probably be confusing until you actually make a polyhedron
or two. I recommend starting by making a dodecahedron, since the modules
are very easy to make, the polyhedron is easy to assemble, and it ends
up being very sturdy. After that, try the tetrahedron, octahedron, cube
and icosahedron, and then move onto the other polyhedrons. Particularly
pretty (and stable) are the rhombicuboctahedron, truncated
icosahedron, truncated octahedron and snub cube.

In all of the descriptions below, I assume that you start with 4x3 paper.
One way to do this is to start with 4x4 paper, fold it into four segments
like an accordian, and rip off a segment. However, you can keep all
four segments and fold the modules just the same. The only difference
will be that the modules will be thicker and a little harder to work with.
What I usually do is start with a long rectangular strip of paper, fold
a big accordian composed of 4x1 segments, and then rip off 4x3 sheets.
If that's confusing, let me know, and I'll diagram it.

## Diagrams of the modules

The pentagon module (108 degrees)
The square module (90 degrees)
The hexagon module (120 degrees)
The triangle module (60 degrees)

*
Jim Plank ---
Jim's Origami Page*