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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:142AU GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 2, 2√2, 4, 11√2, 18, 20, 15√2, 22, 18√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 56 205 92 38 567 0 56 560 56 56 184 74 38 183 92 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
20
56
56√2
18√2
18
38
30