drawing: Goossen Karssenberg

[list][*]The polygons between the pointed figures seem irregular but at a closer look one notices some regular heptagons.[/*][*]One can see clearly that the pattern has got an axis of symmetry.[/*][*]It’s possible to identify a unit repeat.[/*][*]An underlying polygonal pattern consists of just two different hexagonal figures.[/*][*]In next pages we’ll examine these hexagons and how they fit into the unit repeat.[/*][/list][br][br]