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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:108AD GHM

Order: 18

Horizontal side: 108 Vertical side: 108

Elements: 1√2, 8, 8√2, 16, 15√2, 16√2, 26, 28, 30, 26√2, 27√2, 28√2, 40, 30√2, 52, 37√2, 56, 40√2.

Code: 405 0 68 404 40 68 563 80 52 282 108 80 281 108 108 276 81 53 87 0 68 86 0 60 165 8 52 164 24 52 302 30 30 10 81 53 374 45 15 523 82 0 262 108 26 303 30 0 152 45 15 263 108 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)

40
40√2
56
28√2
28
27√2
8
8√2
16
16√2
30√2
1√2
37√2
52
26√2
30
15√2
26