Acronym siditetpeat
Name small ditetragonary tetrapentagonal tiling,
hyperbolic x4o4o5/2*a tiling
 
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Circumradius sqrt[(1-sqrt(5))/2] = 0.786151 i
Vertex figure [(4,5/2)4]

Incidence matrix according to Dynkin symbol

x4o4o5/2*a   (N → ∞)

. . .      | 5N |   8 |  4  4
-----------+----+-----+------
x . .      |  2 | 20N |  1  1
-----------+----+-----+------
x4o .      |  4 |   4 | 5N  *
x . o5/2*a |  5 |   5 |  * 4N

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