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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:139AB GHM

Order: 18

Horizontal side: 139 Vertical side: 139

Elements: 11, 8√2, 16, 22, 16√2, 24, 28, 22√2, 24√2, 39, 28√2, 48, 50, 39√2, 61, 50√2, 78, 89.

Code: 897 0 139 613 89 78 507 89 139 506 89 89 115 89 78 286 0 50 247 28 78 246 28 54 487 52 78 783 100 0 392 139 39 162 44 38 285 0 22 393 139 0 163 44 22 82 52 30 225 0 0 224 22 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)

89
61
50
50√2
11
28√2
24
24√2
48
78
39√2
16√2
28
39
16
8√2
22
22√2