Acronym  ... 
Name 
x3v3o, variation of truncated tetrahedron, vertex figure of dattady 
Circumradius  sqrt(7/8) = 0.935414 
General of army  (is itself convex) 
Colonel of regiment  (is itself locally convex) 
Dihedral angles 

Confer 
Incidence matrix according to Dynkin symbol
x3v3o . . .  12  1 2  2 1 +++ x . .  2  6 *  2 0 . v .  2  * 12  1 1 +++ x3v .  6  3 3  4 * . v3o  3  0 3  * 4
o3/2v3x . . .  12  2 1  1 2 +++ . v .  2  12 *  1 1 . . x  2  * 6  0 2 +++ o3/2v .  3  3 0  4 * . v3x  6  3 3  * 4
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