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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:142AT GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 1√2, 2, 2√2, 4, 11√2, 15√2, 22, 18√2, 19√2, 30, 38, 41, 30√2, 56, 71, 56√2, 86, 71√2.

Code: 865 0 56 714 71 71 713 142 71 154 86 56 110 101 71 411 142 71 43 90 56 22 92 58 221 112 60 302 142 30 23 92 56 12 93 57 190 93 57 567 0 56 560 56 56 184 74 38 381 112 38 303 142 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)

86
71√2
71
15√2
11√2
41
4
2√2
22
30√2
2
1√2
19√2
56
56√2
18√2
38
30