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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:138AS GHM

Order: 18

Horizontal side: 138 Vertical side: 138

Elements: 6, 7, 7√2, 14, 13√2, 21, 16√2, 26, 27, 21√2, 32, 42, 32√2, 48, 48√2, 69, 90, 69√2.

Code: 905 0 48 694 69 69 693 138 69 214 90 48 213 111 48 145 111 55 271 138 69 75 111 48 74 118 48 130 125 55 487 0 48 480 48 48 324 80 16 323 112 16 67 112 48 267 112 42 423 138 0 164 96 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
69√2
69
21√2
21
14
27
7
7√2
13√2
48
48√2
32√2
32
6
26
42
16√2