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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:218AA GHM

Order: 18

Horizontal side: 218 Vertical side: 218

Elements: 10, 10√2, 14√2, 28, 21√2, 37, 28√2, 42, 46, 36√2, 52, 37√2, 72, 73, 73√2, 109, 145, 109√2.

Code: 1455 0 73 1094 109 109 1093 218 109 364 145 73 463 181 63 372 218 72 371 218 109 737 0 73 730 73 73 521 125 73 105 125 63 104 135 63 723 218 0 425 125 21 284 153 35 283 181 35 144 167 21 214 146 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)

145
109√2
109
36√2
46
37√2
37
73
73√2
52
10
10√2
72
42
28√2
28
14√2
21√2