Polyhedral stones in the British Museum

Three polyhedral stones
British Museum (London)
Photography by Carlos Dorce

The exhibitions of the British Museum have some mathematical pieces which must to be mentioned in a blog like this and three of this objects are the three polyhedral stones that we can see in the picture. The first one is a green stone  inscribed with Roman numerals dated around the 1st-2nd century AD; the second is a stone inscribed with letters of the Greek alphabet dated in the 1st century AD and the third stone is also dated in the same century and it’s inscribed with Greek letters. We can see their polyhedral shapes and stones number 2 and 3 are two regular cuboctahedra:

Font: Wikimedia Commons

Why Romans would like to have this kind of stones?

LocationBritish Museum at London (map)


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