If you relax the conditions for generating the Platonic solids and specify that faces must be regular but not necessarily identical polygons, there are 13 such polyhedra, known as Archimedean solids
. One example is the truncated icosahedron, familiar as the pattern on a soccer ball, which consists of 12 pentagons and 20 hexagons.
A paper-and-pencil geometry test (GT) about Platonic and Archimedean solids was constructed and used as the pre- and posttest instrument.
The left panel contains an index of the Platonic and Archimedean solids in alphabetical order.
The first version, Platonic and Archimedean Solids E-book (PASE), resembles a traditional print-based book with interactive, hypertextual features, as in typical e-books.
Archimedean solids also have identical vertices; however they are composed of two or more types of regular polygons.
Two different versions of a mathematics e-book were designed containing information about Platonic and Archimedean solids: a hypertextual version and a version augmented with interactive visuals.