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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:144AF GHM

Order: 18

Horizontal side: 144 Vertical side: 144

Elements: 2, 2√2, 4, 3√2, 6, 13, 13√2, 26, 39, 29√2, 33√2, 36√2, 39√2, 40√2, 66, 72, 78, 72√2.

Code: 785 0 66 724 72 72 723 144 72 61 78 72 45 78 68 334 111 39 366 108 36 25 78 66 24 80 66 290 82 68 665 0 0 404 40 26 130 53 39 131 66 39 397 66 39 390 105 39 34 108 36 261 66 26

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)

78
72√2
72
6
4
33√2
36√2
2
2√2
29√2
66
40√2
13√2
13
39
39√2
3√2
26