Acronym topazat
Name hyperbolic truncated order 5 apeirogonal tiling
Circumradius sqrt[-23+8 sqrt(5)]/2 = 1.130426 i
Vertex figure [5,∞2]

Incidence matrix according to Dynkin symbol

x∞x5o   (N,M → ∞)

. . . | 10NM |   1    2 |   2   1
------+------+----------+--------
x . . |    2 | 5NM    * |   2   0
. x . |    2 |   * 10NM |   1   1
------+------+----------+--------
x∞x .    2M |   M    M | 10N   *
. x5o |    5 |   0    5 |   * 2NM

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