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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:172BB GHM

Order: 19

Horizontal side: 172 Vertical side: 172

Elements: 2, 2√2, 4, 6, 5√2, 6√2, 10, 12, 20, 22√2, 32, 27√2, 54, 64, 54√2, 86, 64√2, 108, 86√2.

Code: 1085 0 64 864 86 86 863 172 86 224 108 64 26 128 84 45 130 82 101 140 86 52 145 81 321 172 86 203 128 64 25 128 82 67 128 82 60 134 82 270 145 81 127 128 76 645 0 0 644 64 0 540 118 54 541 172 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
2√2
4
10
5√2
32
20
2
6
6√2
27√2
12
64
64√2
54√2
54