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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:172BH GHM

Order: 19

Horizontal side: 172 Vertical side: 172

Elements: 1, 1√2, 3√2, 6, 6√2, 12, 11√2, 12√2, 19, 22, 21√2, 22√2, 43√2, 64, 54√2, 86, 64√2, 108, 86√2.

Code: 1085 0 64 864 86 86 863 172 86 224 108 64 30 130 86 214 151 65 436 129 43 193 127 64 67 127 83 60 133 83 127 127 77 120 139 77 15 127 64 14 128 64 116 118 54 227 129 65 645 0 0 644 64 0 540 118 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
86√2
86
22√2
3√2
21√2
43√2
19
6
6√2
12
12√2
1
1√2
11√2
22
64
64√2
54√2