Ödev
* Starting pages: Fig 7.28 and Sec 9.9
https://en.wikipedia.org/wiki/Archimedean_solid
* First three pictures show how to make 9 circles of Oh symmetry
and 48 triangles in the dual solid of 4.6.8
* Escher's drawing (Ref 5) may help you visualise:
http://math.slu.edu/escher/upload/4/44/Concentric-rinds.jpg
Referans
