Acronym	safthi
Name	great retrofrustary trishecatonicosachoron
Cross sections	©
Circumradius	sqrt(5) = 2.236068
Vertex figure	©
Colonel of regiment	affixthi
Face vector	3600, 14400, 7680, 360
External links

As abstract polytope safthi is isomorphic to girfthi, thereby replacing pentagrams by pentagons and decagrams by decagons, resp. siid by giid, gaddid by saddid, and giddy by siddy.

Incidence matrix

3600 ♦    4    4 |    2    4    4    2 |   2   2   2
-----+-----------+---------------------+------------
   2 | 7200    * |    1    1    1    0 |   1   1   1
   2 |    * 7200 |    0    1    1    1 |   1   1   1
-----+-----------+---------------------+------------
   5 |    5    0 | 1440    *    *    * |   1   1   0  {5/2}
   6 |    3    3 |    * 2400    *    * |   1   0   1
  10 |    5    5 |    *    * 1440    * |   0   1   1  {10/3}
   3 |    0    3 |    *    *    * 2400 |   1   1   0
-----+-----------+---------------------+------------
  60 |   60   60 |  12    20    0   20 | 120   *   *  siid
  60 |   60   60 |  12     0   12   20 |   * 120   *  gaddid
  60 |   60   60 |   0    20   12    0 |   *   * 120  giddy