Acronym ... Name ripahi+600 2thah (?) Circumradius sqrt[(21+9 sqrt(5))/2] = 4.534568 Confer ripahi   2thah

This Grünbaumian polychoron is an edge-faceting of the rectified great faceted hexacosichoron (rigfix). It can be seen as a union of ripahi plus the 600 pseudo-thah filled in as doubled up copies, in fact, these double-covers unite as 2thah, thereby letting the surface cross over at this former pseudo-cells. And indeed, the vertex figure is a crossed faceting of a golden-triangular prismatic part of the stip vertex figure of rigfix. Therefore the vertices of this polychoron coincide by 5.

As abstract polytope ripahi+600 2thah is isomorphic to frox+600 2thah, thereby replacing pentagrams by pentagons, resp. by replacing gid by id and replacing stip by pip.

Incidence matrix according to Dynkin symbol

```x3o3/2x5/2o

. .   .   . | 3600 |    2    4 |    1    4    2    2 |   2   2   1
------------+------+-----------+---------------------+------------
x .   .   . |    2 | 3600    * |    1    2    0    0 |   2   1   0
. .   x   . |    2 |    * 7200 |    0    1    1    1 |   1   1   1
------------+------+-----------+---------------------+------------
x3o   .   . |    3 |    3    0 | 1200    *    *    * |   2   0   0
x .   x   . |    4 |    2    2 |    * 3600    *    * |   1   1   0
. o3/2x   . |    3 |    0    3 |    *    * 2400    * |   1   0   1
. .   x5/2o |    5 |    0    5 |    *    *    * 1440 |   0   1   1
------------+------+-----------+---------------------+------------
x3o3/2x   . ♦   12 |   12   12 |    4    6    4    0 | 600   *   *
x .   x5/2o ♦   10 |    5   10 |    0    5    0    2 |   * 720   *
. o3/2x5/2o ♦   30 |    0   60 |    0    0   20   12 |   *   * 120
```

```x3o3/2x5/3o

. .   .   . | 3600 |    2    4 |    1    4    2    2 |   2   2   1
------------+------+-----------+---------------------+------------
x .   .   . |    2 | 3600    * |    1    2    0    0 |   2   1   0
. .   x   . |    2 |    * 7200 |    0    1    1    1 |   1   1   1
------------+------+-----------+---------------------+------------
x3o   .   . |    3 |    3    0 | 1200    *    *    * |   2   0   0
x .   x   . |    4 |    2    2 |    * 3600    *    * |   1   1   0
. o3/2x   . |    3 |    0    3 |    *    * 2400    * |   1   0   1
. .   x5/3o |    5 |    0    5 |    *    *    * 1440 |   0   1   1
------------+------+-----------+---------------------+------------
x3o3/2x   . ♦   12 |   12   12 |    4    6    4    0 | 600   *   *
x .   x5/3o ♦   10 |    5   10 |    0    5    0    2 |   * 720   *
. o3/2x5/3o ♦   30 |    0   60 |    0    0   20   12 |   *   * 120
```

```x3/2o3x5/2o

.   . .   . | 3600 |    2    4 |    1    4    2    2 |   2   2   1
------------+------+-----------+---------------------+------------
x   . .   . |    2 | 3600    * |    1    2    0    0 |   2   1   0
.   . x   . |    2 |    * 7200 |    0    1    1    1 |   1   1   1
------------+------+-----------+---------------------+------------
x3/2o .   . |    3 |    3    0 | 1200    *    *    * |   2   0   0
x   . x   . |    4 |    2    2 |    * 3600    *    * |   1   1   0
.   o3x   . |    3 |    0    3 |    *    * 2400    * |   1   0   1
.   . x5/2o |    5 |    0    5 |    *    *    * 1440 |   0   1   1
------------+------+-----------+---------------------+------------
x3/2o3x   . ♦   12 |   12   12 |    4    6    4    0 | 600   *   *
x   . x5/2o ♦   10 |    5   10 |    0    5    0    2 |   * 720   *
.   o3x5/2o ♦   30 |    0   60 |    0    0   20   12 |   *   * 120
```

```x3/2o3x5/3o

.   . .   . | 3600 |    2    4 |    1    4    2    2 |   2   2   1
------------+------+-----------+---------------------+------------
x   . .   . |    2 | 3600    * |    1    2    0    0 |   2   1   0
.   . x   . |    2 |    * 7200 |    0    1    1    1 |   1   1   1
------------+------+-----------+---------------------+------------
x3/2o .   . |    3 |    3    0 | 1200    *    *    * |   2   0   0
x   . x   . |    4 |    2    2 |    * 3600    *    * |   1   1   0
.   o3x   . |    3 |    0    3 |    *    * 2400    * |   1   0   1
.   . x5/3o |    5 |    0    5 |    *    *    * 1440 |   0   1   1
------------+------+-----------+---------------------+------------
x3/2o3x   . ♦   12 |   12   12 |    4    6    4    0 | 600   *   *
x   . x5/3o ♦   10 |    5   10 |    0    5    0    2 |   * 720   *
.   o3x5/3o ♦   30 |    0   60 |    0    0   20   12 |   *   * 120
```