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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:142BA GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 2, 2√2, 11√2, 16, 18, 20, 22, 16√2, 21√2, 22√2, 32, 39, 44, 55, 71, 55√2, 87, 71√2.

Code: 875 0 55 714 71 71 713 142 71 164 87 55 163 103 55 185 103 53 391 142 71 557 0 55 550 55 55 441 99 55 222 121 33 24 101 53 23 103 53 201 121 53 212 142 32 223 121 11 323 142 0 114 110 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)

87
71√2
71
16√2
16
18
39
55
55√2
44
22√2
2√2
2
20
21√2
22
32
11√2