Truncated hexagonal tiling
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In geometry, the truncated hexagonal tiling is a semiregular tiling of the Euclidean plane. There are 2 dodecagons and one triangle on each vertex.
On painted porcelain, China
Marble floor mosaic Basilica of St Mark Vencice
Hexagon
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In geometry, a hexagon is a six-sided polygon. The total of the internal angles of any simple hexagon is 720°.
Giant's Causeway closeup
The ideal crystalline structure of graphene is a hexagonal grid.
Assembled E-ELT mirror segments
A beehive honeycomb