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Order-4 octagonal tiling : ウィキペディア英語版 | Order-4 octagonal tiling
In geometry, the order-4 octagonal tiling is a regular tiling of the hyperbolic plane. It has Schläfli symbol of . == Uniform constructions == There are four uniform constructions of this tiling, three of them as constructed by mirror removal from the () kaleidoscope. Removing the mirror between the order 2 and 4 points, (), gives (), ( *884) symmetry. Removing two mirrors as (), leaves remaining mirrors *4444 symmetry. |r | |- align=center !Coxeter diagram | | | = = | = |}
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