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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:54AB2of4 GHM

Order: 18

Horizontal side: 54 Vertical side: 54

Elements: 1, 2√2, 4, 3√2, 4√2, 6, 8, 6√2, 7√2, 13, 14, 13√2, 14√2, 20, 17√2, 20√2, 34, 27√2.

Code: 345 0 20 274 27 27 136 41 41 143 41 27 135 41 28 17 41 28 26 40 26 47 42 28 46 42 24 87 46 28 146 40 14 74 34 20 60 40 26 205 0 0 204 20 0 36 37 17 67 40 20 170 37 17

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)

34
27√2
13√2
14
13
1
2√2
4
4√2
8
14√2
7√2
6√2
20
20√2
3√2
6
17√2