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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:138AL GHM

Order: 18

Horizontal side: 138 Vertical side: 138

Elements: 3√2, 6, 6√2, 9√2, 16, 18, 14√2, 16√2, 21√2, 32, 23√2, 37, 32√2, 53, 69, 53√2, 85, 69√2.

Code: 855 0 53 694 69 69 693 138 69 164 85 53 163 101 53 142 115 55 371 138 69 230 115 55 537 0 53 530 53 53 214 74 32 36 92 50 67 95 53 66 95 47 183 92 32 92 101 41 324 106 0 323 138 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)

85
69√2
69
16√2
16
14√2
37
23√2
53
53√2
21√2
3√2
6
6√2
18
9√2
32√2
32