The incidence graph of the complementary design of PG(2,3) (and the distance-3 graph of its incidence graph).
| Number of vertices: | 26 |
| Diameter: | 3 |
| Intersection array: | {9,8,3;1,6,9} |
| Spectrum: | 91(√3)12(−√3)12(−9)1 |
| Automorphism group: | Aut(PSL(3,3))≅PSL(3,3):2 |
| Distance-transitive: | Yes |
| Bipartite |