Acronym	tigid
TOCID symbol	tE
Name	truncated great dodecahedron
	© ©
Circumradius	sqrt[(17+5 sqrt(5))/8] = 1.876844
Vertex figure	[5/2,102]
General of army	f3x5o
Colonel of regiment	(is itself locally convex – no other uniform polyhedral members)
Dihedral angles	between {5/2} and {10}:   arccos(-1/sqrt(5)) = 116.565051° between {10} and {10}:   arccos(1/sqrt(5)) = 63.434949°
Face vector	60, 90, 24
Confer	Grünbaumian relatives: 2tigid   variations: o5/2f5x   decompositions: gad || tigid   general polytopal classes: Wythoffian polyhedra
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As abstract polytope tigid is isomorphic to quit sissid, thereby replacing pentagrams by pentagons and decagons by decagrams.

Note that tigid can be thought of as the external blend of 1 gad + 12 pecues + 12 stappies. This decomposition is described as the degenerate segmentochoron xx5ox5/2oo&#xt.

Incidence matrix according to Dynkin symbol

o5/2x5x

.   . . | 60 |  2  1 |  1  2
--------+----+-------+------
.   x . |  2 | 60  * |  1  1
.   . x |  2 |  * 30 |  0  2
--------+----+-------+------
o5/2x . |  5 |  5  0 | 12  *
.   x5x | 10 |  5  5 |  * 12

snubbed forms: o5/2β5x, o5/2x5β, o5/2β5β

o5/3x5x

.   . . | 60 |  2  1 |  1  2
--------+----+-------+------
.   x . |  2 | 60  * |  1  1
.   . x |  2 |  * 30 |  0  2
--------+----+-------+------
o5/3x . |  5 |  5  0 | 12  *
.   x5x | 10 |  5  5 |  * 12