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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:121AA GHM

Order: 18

Horizontal side: 121 Vertical side: 121

Elements: 2, 2√2, 4, 9√2, 18, 18√2, 29, 31, 36, 29√2, 30√2, 31√2, 32√2, 54, 58, 60, 61, 63.

Code: 637 0 121 543 63 67 587 63 121 603 121 61 96 0 58 187 9 67 186 9 49 367 27 67 43 63 63 320 59 63 24 61 61 304 91 31 613 121 0 292 29 29 21 29 31 315 29 0 314 60 0 293 29 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)

63
54
58
60
9√2
18
18√2
36
4
32√2
2√2
30√2
61
29√2
2
31
31√2
29