Page 23 - Exquisite Modular Origami

Super Simple Isosceles Triangle Unit

(Created June 2001)

As the name implies this is a very simple unit. So naturally, it has been
discovered independently by many. This model will make one familiar with
assembling the Kepler-Poinsot solids discussed previously, and the experience

can form the basis of many of my origami designs presented later in the book.
Note that it is possible to build a “stellated” version of any other polyhedron
with this unit. Here I use the word stellated in a loose sense and not in a true
mathematical sense, merely meaning that the faces of a chosen polyhedron
could be extended to pyramids imagining the faces as bases, thus forming
spikes of a star. However, the two stellations of a dodecahedron constructed
next are the true stellated dodecahedra.

Make a template by folding a square into thirds. Use the method explained at
the end of the section Origami Symbols & Bases. Use this template for
performing Step 1 below.