Acronym	rappisdi
Name	retroantiprismatosnub disicositetrachoron
Cross sections	©
Circumradius	1
Vertex figure
Coordinates	((1+sqrt(5))/4, (sqrt(5)-1)/4, 1/4, 0)   & all even permutations, all changes of sign
General of army	sadi
Colonel of regiment	icoic subregiment of sishi
Face vector	96, 720, 864, 144
Confer	uniform relatives: dittady+dox   related scaliform: mesdi
External links

Note that on dritit, the edges that connect stars to squares look like two different classes, but in rappisdi, they become one class. Same with the edges where pentagons meet squares. Also the squares themselves look like two classes in the verf, but become one class in rappisdi.

This polychoron has ionic icoic symmetry.

Incidence matrix

96 ♦   3  12 |  3   9   9   6 |  6  3  3
---+---------+----------------+---------
 2 | 144   * |  2   2   2   0 |  4  1  1
 2 |   * 576 |  0   1   1   1 |  1  1  1
---+---------+----------------+---------
 3 |   3   0 | 96   *   *   * |  2  0  0
 3 |   1   2 |  * 288   *   * |  1  1  0
 3 |   1   2 |  *   * 288   * |  1  0  1
 3 |   0   3 |  *   *   * 192 |  0  1  1
---+---------+----------------+---------
 6 |   6   6 |  2   3   3   0 | 96  *  *  (oct)
12 |   6  24 |  0  12   0   8 |  * 24  *  (ike)
12 |   6  24 |  0   0  12   8 |  *  * 24  (gike)

holosnubbed form: rappisdi+mesdi+288{4}