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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:138AO GHM

Order: 19

Horizontal side: 138 Vertical side: 138

Elements: 8√2, 16, 12√2, 13√2, 15√2, 22, 16√2, 24, 26, 30, 32, 26√2, 39, 30√2, 54, 42√2, 69, 84, 69√2.

Code: 845 0 54 694 69 69 693 138 69 154 84 54 130 99 69 391 138 69 323 86 24 267 86 56 260 112 56 545 0 0 424 42 12 227 86 30 300 108 30 301 138 30 126 42 12 245 54 0 164 70 8 163 86 8 84 78 0

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)

84
69√2
69
15√2
13√2
39
32
26
26√2
54
42√2
22
30√2
30
12√2
24
16√2
16
8√2