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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:80BE GHM

Order: 18

Horizontal side: 80 Vertical side: 80

Elements: 2, 2√2, 4, 3√2, 6, 7, 7√2, 13, 13√2, 14√2, 20, 26, 27, 20√2, 27√2, 40, 53, 40√2.

Code: 535 0 27 404 40 40 403 80 40 131 53 40 77 53 40 76 53 33 207 60 40 206 60 20 32 56 30 26 54 28 45 56 26 146 40 14 25 54 26 277 0 27 270 27 27 134 40 14 265 54 0 61 60 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)

53
40√2
40
13
7
7√2
20
20√2
3√2
2√2
4
14√2
2
27
27√2
13√2
26
6