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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:178AB GHM

Order: 18

Horizontal side: 178 Vertical side: 178

Elements: 10√2, 11√2, 20, 22, 16√2, 20√2, 32, 38, 27√2, 40, 54, 46√2, 70, 54√2, 86, 92, 70√2, 108.

Code: 1085 0 70 921 92 178 462 138 132 861 178 178 206 118 112 405 138 92 106 108 102 205 118 92 166 92 86 325 108 70 221 140 92 112 151 81 381 178 92 270 151 81 705 0 0 704 70 0 540 124 54 541 178 54

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

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

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

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

108
92
46√2
86
20√2
40
10√2
20
16√2
32
22
11√2
38
27√2
70
70√2
54√2
54