Acronym ...
Name hyperbolic order 7/2 heptagon tiling
 
Circumradius sqrt[(1-cos2(π/7))/(3-4 cos2(π/7))] = 0.873057 i
Vertex figure [77]/2
Dual x7/2o7o
Confer
related tesselations:
x3o7o  

This hyperbolic star tiling can be obtained from x3o7o, when 7 triangles each are joined into one heptagon each. Every part of the tiling will be covered thrice: every triangle of that related tiling would be used in 3 heptagons each.


Incidence matrix according to Dynkin symbol

o7/2o7x   (N → ∞)

.   . . | 2N |  7 |  7
--------+----+----+---
.   . x |  2 | 7N |  2
--------+----+----+---
.   o7x |  7 |  7 | 2N

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