Acronym  did 
TOCID symbol  ED* 
Name 
dodecadodecahedron, great dodecadodecahedron 
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Circumradius  1 
Vertex figure  [(5/2,5)^{2}] 
General of army  id 
Colonel of regiment  (is itself locally convex – other uniform polyhedral members: gidhei sidhei – other edge facetings) 
Dihedral angles 

Confer 

External links 
As abstract polytope did is automorph, thereby interchanging the roles of pentagons and pentagrams. As such it could be seen to be a nonregular realization of the regular abstract polyhedron {5,4}_{6} (where the index just denotes the size of the corresponding Petrie polygon).
Note that did can be thought of as the external blend of 12 peppies + 12 stappies. This decomposition is described as the degenerate segmentochoron oo5ox5/2oo&#x.
Incidence matrix according to Dynkin symbol
o5/2x5o . . .  30  4  2 2 +++ . x .  2  60  1 1 +++ o5/2x .  5  5  12 * . x5o  5  5  * 12 snubbed forms: o5/2β5o
o5/3x5o . . .  30  4  2 2 +++ . x .  2  60  1 1 +++ o5/3x .  5  5  12 * . x5o  5  5  * 12
o5/4x5/2o . . .  30  4  2 2 +++ . x .  2  60  1 1 +++ o5/4x .  5  5  12 * . x5/2o  5  5  * 12
o5/4x5/3o . . .  30  4  2 2 +++ . x .  2  60  1 1 +++ o5/4x .  5  5  12 * . x5/3o  5  5  * 12
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