![](http://polyplane.org/wp-content/uploads/sites/8/2023/04/20230411_100744-scaled-e1682622881526-167x300.jpg)
Untitled, brass wire and solder
[12 F, 18 E, 8 V] The bipyamids are an infinite family of polyhedra with any even number of identical faces, although not necessarily all identical angles. This one based on a hexagon has twelve faces, with one half elongated so that there are two different types of faces rather than just one.