## A ZOMETOOL MODEL OF A 24 CELL

Here we describe how to build a vertex-first projection of the 24 cell, one of the six regular polytopes in 4-dimensional space, using the zometool system. For the model you need

- 15 balls,
- 12 long blue (b2) struts,
- 32 long yellow (y2) struts.

Of course one can scale down the model to b1-y1 (medium size) or to b0-y0 (mini version).

For further information and instructions you might also wish to consult one of the following webpages:

- Eusebeia 4d visualization,
- David Richter's webpage about the Zometool models for the 24 cell.

The pictures below were taken by Eva-Maria Gassner.

**Step 3**

From the remaining struts build 6 yellow sputniks and mount them on the faces of the cube in order to complete the model.

This Zometool model of the 24 cell shows the 6 octahedral cells that surround the central vertex. Each of these cells has