In geometry, the truncated tetrapentagonal tiling is a uniform tiling of the hyperbolic plane.
There are four small index subgroup constructed from [5,4] by mirror removal and alternation.
In these images fundamental domains are alternately colored black and white, and mirrors exist on the boundaries between colors.
A radical subgroup is constructed [5*,4], index 10, as [5+,4], (5*2) with gyration points removed, becoming orbifold (*22222), and its direct subgroup [5*,4]+, index 20, becomes orbifold (22222).
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