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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:142AD GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 2, 4√2, 8, 8√2, 9√2, 11√2, 12√2, 18, 22, 18√2, 22√2, 44, 49, 60, 71, 82, 60√2, 71√2.

Code: 825 0 60 714 71 71 713 142 71 114 82 60 90 93 71 491 142 71 23 84 60 187 84 62 180 102 62 607 0 60 600 60 60 124 72 48 86 76 52 46 72 48 85 76 44 441 120 44 222 142 22 223 142 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)

82
71√2
71
11√2
9√2
49
2
18
18√2
60
60√2
12√2
8√2
4√2
8
44
22√2
22