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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:138AJ GHM

Order: 18

Horizontal side: 138 Vertical side: 138

Elements: 9, 10, 13, 10√2, 11√2, 13√2, 20, 22, 26, 21√2, 30, 26√2, 43, 56, 69, 56√2, 82, 69√2.

Code: 825 0 56 694 69 69 693 138 69 134 82 56 133 95 56 225 95 47 431 138 69 567 0 56 560 56 56 301 86 56 205 86 36 91 95 56 114 106 36 210 117 47 105 86 26 104 96 26 264 112 0 263 138 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
69√2
69
13√2
13
22
43
56
56√2
30
20
9
11√2
21√2
10
10√2
26√2
26