Acronym gisdid Name great snub dodekicosidodecahedron,shub-niggurath ` © ©` Circumradius 1/sqrt(2) = 0.707107 Vertex figure [5/3,3,5/2,33] Colonel of regiment (is itself not locally convex, but no other uniform polyhedral members; *) Externallinks

As abstract polytope gisdid is isomorphic to sided, thereby replacing prograde pentagrams by (prograde) pentagons, while retrrograde pentagrams keep unchanged.

* The regiment of gisdid is contained in that of gidrid. In fact, it is an edge-faceting of the great dirhombicosidodecahedron (gidrid).

Incidence matrix according to Dynkin symbol

```s5/3s5/2s3*a

demi( .   .   .    ) | 60 |  2  2  2 |  1  1  1  3
---------------------+----+----------+------------
sefa( s5/3s   .    ) |  2 | 60  *  * |  1  0  0  1
sefa( s   .   s3*a ) |  2 |  * 60  * |  0  1  0  1
sefa( .   s5/2s    ) |  2 |  *  * 60 |  0  0  1  1
---------------------+----+----------+------------
s5/3s   .      ♦  5 |  5  0  0 | 12  *  *  *
s   .   s3*a   ♦  3 |  0  3  0 |  * 20  *  *
.   s5/2s      ♦  5 |  0  0  5 |  *  * 12  *
sefa( s5/3s5/2s3*a ) |  3 |  1  1  1 |  *  *  * 60

starting figure: x5/3x5/2x3*a
```
```or

60 |   4  2 |  2  3  1
---+--------+---------
2 | 120  * |  1  1  0  (*)
2 |   * 60 |  0  1  1
---+--------+---------
5 |   5  0 | 24  *  *  (*)
3 |   2  1 |  * 60  *
3 |   0  3 |  *  * 20

(*) abstract polytopal equivalence of the pro- and retrograde pentagrammal sides is being applied in here additionally
```