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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:81AD GHM

Order: 18

Horizontal side: 81 Vertical side: 81

Elements: 2√2, 4, 4√2, 6, 6√2, 12, 14, 18, 19, 25, 18√2, 19√2, 31, 25√2, 37, 31√2, 44, 50.

Code: 505 0 31 441 44 81 182 62 63 371 81 81 183 62 45 192 81 44 42 48 41 41 48 45 22 50 43 141 62 45 193 81 25 66 44 37 125 50 31 315 0 0 314 31 0 63 62 25 250 56 25 251 81 25

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)

50
44
18√2
37
18
19√2
4√2
4
2√2
14
19
6√2
12
31
31√2
6
25√2
25