Acronym	siidip
Name	small-icosicosidodecahedron prism
Circumradius	sqrt[(19+3 sqrt(5))/8] = 1.792631
Colonel of regiment	(is itself locally convex – other uniform polyhedral members: sidditdiddip   & others)
Dihedral angles	at {4} between hip and stip:   arccos(-sqrt[(5+2 sqrt(5))/15]) = 142.622632° at {4} between hip and trip:   arccos(-sqrt(5)/3) = 138.189685° at {6} between hip and siid:   90° at {5/2} between siid and stip:   90° at {3} between siid and trip:   90°
Face vector	120, 300, 224, 54
Confer	scaliform relative: siida   general polytopal classes: Wythoffian polychora
External links

As abstract polytope siidip is isomorphic to giidip, thereby replacing pentagrams by pentagons, resp. replacing siid by giid and stip by pip.

Incidence matrix according to Dynkin symbol

x x5/2o3x3*b

. .   . .    | 120 |  1   2   2 |  2  2  1  2  1 |  1  2  1 1
-------------+-----+------------+----------------+-----------
x .   . .    |   2 | 60   *   * |  2  2  0  0  0 |  1  2  1 0
. x   . .    |   2 |  * 120   * |  1  0  1  1  0 |  1  1  0 1
. .   . x    |   2 |  *   * 120 |  0  1  0  1  1 |  0  1  1 1
-------------+-----+------------+----------------+-----------
x x   . .    |   4 |  2   2   0 | 60  *  *  *  * |  1  1  0 0
x .   . x    |   4 |  2   0   2 |  * 60  *  *  * |  0  1  1 0
. x5/2o .    |   5 |  0   5   0 |  *  * 24  *  * |  1  0  0 1
. x   . x3*b |   6 |  0   3   3 |  *  *  * 40  * |  0  1  0 1
. .   o3x    |   3 |  0   0   3 |  *  *  *  * 40 |  0  0  1 1
-------------+-----+------------+----------------+-----------
x x5/2o .    ♦  10 |  5  10   0 |  5  0  2  0  0 | 12  *  * *
x x   . x3*b ♦  12 |  6   6   6 |  3  3  0  2  0 |  * 20  * *
x .   o3x    ♦   6 |  3   0   6 |  0  3  0  0  2 |  *  * 20 *
. x5/2o3x3*b ♦  60 |  0  60  60 |  0  0 12 20 20 |  *  *  * 2

x x5/3o3/2x3*b

. .   .   .    | 120 |  1   2   2 |  2  2  1  2  1 |  1  2  1 1
---------------+-----+------------+----------------+-----------
x .   .   .    |   2 | 60   *   * |  2  2  0  0  0 |  1  2  1 0
. x   .   .    |   2 |  * 120   * |  1  0  1  1  0 |  1  1  0 1
. .   .   x    |   2 |  *   * 120 |  0  1  0  1  1 |  0  1  1 1
---------------+-----+------------+----------------+-----------
x x   .   .    |   4 |  2   2   0 | 60  *  *  *  * |  1  1  0 0
x .   .   x    |   4 |  2   0   2 |  * 60  *  *  * |  0  1  1 0
. x5/3o   .    |   5 |  0   5   0 |  *  * 24  *  * |  1  0  0 1
. x   .   x3*b |   6 |  0   3   3 |  *  *  * 40  * |  0  1  0 1
. .   o3/2x    |   3 |  0   0   3 |  *  *  *  * 40 |  0  0  1 1
---------------+-----+------------+----------------+-----------
x x5/3o   .    ♦  10 |  5  10   0 |  5  0  2  0  0 | 12  *  * *
x x   .   x3*b ♦  12 |  6   6   6 |  3  3  0  2  0 |  * 20  * *
x .   o3/2x    ♦   6 |  3   0   6 |  0  3  0  0  2 |  *  * 20 *
. x5/3o3/2x3*b ♦  60 |  0  60  60 |  0  0 12 20 20 |  *  *  * 2