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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:210AF GHM

Order: 18

Horizontal side: 210 Vertical side: 210

Elements: 4, 4√2, 8, 22, 22√2, 26√2, 37, 40, 31√2, 34√2, 37√2, 40√2, 68, 71, 71√2, 105, 139, 105√2.

Code: 1395 0 71 1054 105 105 1053 210 105 344 139 71 266 147 79 372 210 68 371 210 105 83 147 71 42 151 75 43 151 71 222 173 53 717 0 71 710 71 71 404 111 31 403 151 31 683 210 0 223 173 31 314 142 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)

139
105√2
105
34√2
26√2
37√2
37
8
4√2
4
22√2
71
71√2
40√2
40
68
22
31√2