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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:80AF GHM

Order: 18

Horizontal side: 80 Vertical side: 80

Elements: 2, 4√2, 8, 8√2, 12, 14, 18, 13√2, 14√2, 17√2, 18√2, 26, 19√2, 28, 36, 26√2, 31√2, 40√2.

Code: 402 40 40 314 31 49 180 62 80 181 80 80 136 31 49 172 61 45 361 80 62 190 61 45 40 40 40 80 36 36 81 44 36 283 28 0 142 42 14 141 42 28 27 42 28 127 42 26 260 54 26 261 80 26

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√2
31√2
18√2
18
13√2
17√2
36
19√2
4√2
8√2
8
28
14√2
14
2
12
26√2
26