Acronym	sirsido
Name	small retrosnub disoctahedron, compound of 2 gike
	© ©
Circumradius	sqrt[(5-sqrt(5))/8] = 0.587785
Inradius	sqrt[(7-3 sqrt(5))/24] = 0.485556
Vertex figure	[35]
General of army	x3f4o
Colonel of regiment	passipsido
External links

Faces of an octahedral subset of triangles pairwise fall into coincident face planes. So either those can be considered separately (type A); or they are considered as (rotated) 2-triangle-compounds (type B).

Incidence matrix

(Type A)

  24 |  4  1 |  3  2 || 1
-----+-------+-------++--
   2 | 48  * |  1  1 || 1
   2 |  * 12 |  2  0 || 1
-----+-------+-------++--
   3 |  2  1 | 24  * || 1
   3 |  3  0 |  * 16 || 1
-----+-------+-------++--
♦ 12 | 24  6 | 12  8 || 2

(Type B)

  24 |  4  1 |  3 2 || 1
-----+-------+------++--
   2 | 48  * |  1 1 || 1
   2 |  * 12 |  2 0 || 1
-----+-------+------++--
   3 |  2  1 | 24 * || 1
   6 |  6  0 |  * 8 || 2
-----+-------+------++--
♦ 12 | 24  6 | 12 8 || 2