| Vertices: | 12 (2[3] + {4 * 2 + 2}[4]) |
| Faces: | 13 ({4 + 2 * 2} equilateral triangles + {2 + 1} squares
+ 2 regular pentagons) |
| Edges: | 23 |
| Symmetry: | 2-fold Pyramidal (C2v) |
| (values below based on edge length = 1) |
| Volume: | sqrt(257+90*sqrt(5)
+24*sqrt(10*(5+2*sqrt(5))))/12 | ≈2.1918819213799986057 |