| vertex_config = | properties = convex, elementary | net = Johnson solid 91 net.png
via Wikipedia infobox
{{Infobox polyhedron | image = Bilunabirotunda.png | type = Johnson | faces = 8 triangles2 squares4 pentagons | edges = 26 | vertices = 14 | symmetry = \mathrm{D}_{2\mathrm{h}} | vertex_config = | properties = convex, elementary | net = Johnson solid 91 net.png }} thumb|3D model of a bilunabirotunda
In geometry, the bilunabirotunda is a Johnson solid with faces of 8 equilateral triangles, 2 squares, and 4 regular pentagons.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).