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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:80AB GHM

Order: 18

Horizontal side: 80 Vertical side: 80

Elements: 2√2, 5, 5√2, 7√2, 14, 18, 14√2, 21, 22, 18√2, 20√2, 21√2, 31, 22√2, 36, 37, 31√2, 44.

Code: 315 0 49 314 31 49 363 62 44 182 80 62 181 80 80 206 60 42 217 0 49 216 0 28 55 21 44 54 26 44 377 21 44 443 58 0 222 80 22 24 60 42 142 14 14 223 80 0 143 14 0 72 21 7

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)

31
31√2
36
18√2
18
20√2
21
21√2
5
5√2
37
44
22√2
2√2
14√2
22
14
7√2