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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:138AT GHM

Order: 18

Horizontal side: 138 Vertical side: 138

Elements: 1, 1√2, 2, 3, 3√2, 5√2, 16, 16√2, 32, 42, 32√2, 48, 58, 42√2, 64, 48√2, 80, 90.

Code: 907 0 138 583 90 80 487 90 138 486 90 90 52 95 85 23 95 83 12 96 84 13 96 83 422 138 42 30 93 83 31 96 83 326 0 48 647 32 80 803 96 0 325 0 16 423 138 0 165 0 0 164 16 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)

90
58
48
48√2
5√2
2
1√2
1
42√2
3√2
3
32√2
64
80
32
42
16
16√2