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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:134BH GHM

Order: 18

Horizontal side: 134 Vertical side: 134

Elements: 4√2, 8, 7√2, 8√2, 9√2, 16, 21, 16√2, 21√2, 32, 23√2, 42, 44, 46, 44√2, 67, 90, 67√2.

Code: 905 0 44 674 67 67 673 134 67 234 90 44 210 113 67 211 134 67 96 83 37 427 92 46 463 134 0 447 0 44 440 44 44 321 76 44 162 92 28 74 83 37 163 92 12 84 84 4 83 92 4 44 88 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)

90
67√2
67
23√2
21√2
21
9√2
42
46
44
44√2
32
16√2
7√2
16
8√2
8
4√2