Twenty-four octants and six tetrahedra combine to build the cuboctahedron.

.

.

Volume = 3 octahedra + 8 tetrahedra

                      = 20 tetrahedra

                       = 5 octahedra

.

Fig. 21 - Sectioning the cuboctahedron

.

Required parts:  24 large triangles, 24 right triangles, 18 pinges

.

.

.

     The ability to section these polyhedra and rearrange them into each other

.

immediately and intuitively establishes a direct volumetric and dimensional

.

relationship between them.  Further evidence of this is the fact that their respective

.

volumes can be expressed as whole number multiples of the tetrahedron.

.
.

 

Tetrahedron

Octahedron

Cube

Cuboctahedron

Tetrahedra

1

4

3

20

.

page 16 of lesson

page 18 of lesson

Back to Knowhere

Home page

Page 17    Geometry rules! - Volumetric relationships of polyhedra

 

home   sitemap   products   Polywood   .networks   contact us   Knowhere   3Doodlings