Acronym ...
Name hyperbolic order 5 dodecahedral tesselation
 
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Circumradius sqrt[(1-2 sqrt(5))/19] = 0.427486 i
Vertex figure
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Dual (selfdual)
Confer
general polytopal classes:
regular   noble polytopes  
External
links
wikipedia

Incidence matrix according to Dynkin symbol

x5o3o5o   (N → ∞)

. . . . |  N  12 | 30 | 20
--------+----+----+----+---
x . . . |  2 | 6N |  5 |  5
--------+----+----+----+---
x5o . . |  5 |  5 | 6N |  2
--------+----+----+----+---
x5o3o .  20 | 30 | 12 |  N

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