octagons
As a scientist Hankin describes very systematically the decorative patterns he sees, from very easy ones to very complex ones. A very simple application of the 'Polygons in contact' is the fitting of octagons.
![Image](https://www.geogebra.org/resource/ve7tumtd/o46veJhg2RsWHYTD/material-ve7tumtd.png)
Hankin understands that one can start from this basic pattern to create some more complex patterns. In the octagons two diagonals are drawn, so that above the octagons a pattern is created that, on first sight, hasn’t got anything in common with the regular octagons.