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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:78AV GHM

Order: 18

Horizontal side: 78 Vertical side: 78

Elements: 4, 3√2, 6, 8, 6√2, 9, 7√2, 13, 14, 17, 15√2, 22, 26, 30, 26√2, 39, 52, 39√2.

Code: 525 0 26 394 39 39 393 78 39 131 52 39 97 52 39 30 61 39 171 78 39 60 58 36 61 64 36 145 64 22 47 52 30 303 56 0 152 71 15 81 64 30 265 0 0 264 26 0 74 71 15 223 78 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)

52
39√2
39
13
9
3√2
17
6√2
6
14
4
30
15√2
8
26
26√2
7√2
22