Derivative UltraPerfect Isosceles Right Triangled Square

Title: _p 16:110JA GHM

Order: 16

Horizontal side: 110 Vertical side: 110

Elements: 3√2, 6, 10, 10√2, 20, 18√2, 20√2, 21√2, 30, 24√2, 40, 42, 30√2, 50, 50√2, 80.

Code: 807 0 110 200 80 110 201 100 110 102 110 100 101 110 110 506 60 50 423 60 48 407 60 90 505 60 0 180 18 48 214 39 27 246 36 24 307 0 30 300 30 30 61 36 30 32 39 27

The properties below may precede order:side in a tiling's title:

• c = crossed. There is a tile-corner traversed by two lines. 18:48JB2of5 is the only known crossed DUIRTS of order < 19.
• d = double-pentagon patterned. Every such tiling is a subdivision of an instance of the same deformable tiling by two 45-90-90-90-225 pentagons with a shared side, four triangles and two pseudotriangles.
• e = elegant. No tile-corner is just a T-junction. Such tilings may be considered aesthetically pleasing. The only known elegant DUIRTS's of order < 19 are of order 18 and side 147.
• p/r/t = pseudotriangular/rectangular/triangular inclusion subdivided into at least 6/5/6 triangles respectively.

Credit for Discovery

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)