| Vertices: | 10 (9[3] + 1[9]) |
| Faces: | 10 (9 isosceles triangles + 1 regular enneagon) |
| Edges: | 18 (9 short + 9 long) |
| Symmetry: | 9-fold Pyramidal (C9v) |
| Dual Solid: | Enneagonal Pyramid (itself) |
| (values below based on edge-scribed radius = 1) |
| Short Edge (9): | sqrt(root[(x^3)+72*(x^2)+960*x−512]) | ≈0.71653484200511640331 |
| Long Edge (9): | sqrt(root[(x^3)−24*(x^2)−384*x−512]) | ≈5.9406896083264763268 |
| Edge-scribed Radius: | 1 |
| Volume: | root[(x^3)−72*(x^2)+1152*x−4608] | ≈6.18654722475458027351 |