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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:56AD GHM

Order: 18

Horizontal side: 56 Vertical side: 56

Elements: 6, 6√2, 9, 8√2, 12, 9√2, 11√2, 16, 12√2, 17, 18, 15√2, 22, 16√2, 23, 17√2, 27, 22√2.

Code: 225 0 34 224 22 34 66 38 50 127 44 56 126 44 44 273 38 23 185 38 32 172 17 17 114 11 23 95 38 23 94 47 23 166 40 16 61 17 23 235 17 0 154 32 8 173 17 0 86 32 8 165 40 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)

22
22√2
6√2
12
12√2
27
18
17√2
11√2
9
9√2
16√2
6
23
15√2
17
8√2
16