Acronym	dasi
Name	disnub icosahedron, compound of 20 oct (but not addasi)
	© ©
Circumradius	1/sqrt(2) = 0.707107
Inradius	1/sqrt(6) = 0.408248
Vertex figure	2[34]
Dihedral angles (at margins)	between {3} and {3}:   arccos(-1/3) = 109.471221°
Confer	related compounds: addasi   sapisseri   uniform relative: gidrid
External links

Dasi occurs as special case of addasi.

As vertices coincide by pairs it can be viewed (like the more general addasi) with vertices counted separate (type A), or alternatively with coincident ones identified (type B).

This polyhedron is an edge-faceting of the great dirhombicosidodecahedron (gidrid).

Incidence matrix

(Type A)

120 |   2   2 |   3  1 ||  1
----+---------+--------++---
  2 | 120   * |   1  1 ||  1
  2 |   * 120 |   2  0 ||  1
----+---------+--------++---
  3 |   1   2 | 120  * ||  1
  3 |   3   0 |   * 40 ||  1
----+---------+--------++---
♦ 6 |  6  6 |   6  2 || 20

(Type B)

 60 |   4   4 |   6  2 ||  2
----+---------+--------++---
  2 | 120   * |   1  1 ||  1
  2 |   * 120 |   2  0 ||  1
----+---------+--------++---
  3 |   1   2 | 120  * ||  1
  3 |   3   0 |   * 40 ||  1
----+---------+--------++---
♦ 6 |  6  6 |   6  2 || 20