| Bilunabirotunda | |
|---|---|
 | |
| Type | Johnson J90 – J91 – J92 |
| Faces | 8 triangles 2 squares 4 pentagons |
| Edges | 26 |
| Vertices | 14 |
| Vertex configuration | 4(3.52) 8(3.4.3.5) 2(3.5.3.5) |
| Symmetry group | |
| Properties | convex, elementary |
| Net | |
 | |
In geometry, the bilunabirotunda is a Johnson solid with faces of 8 equilateral triangles, 2 squares, and 4 regular pentagons.