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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:54AB1of4 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 20 42 28 64 48 22 146 40 14 74 34 20 63 40 20 47 40 26 40 44 26 87 40 22 205 0 0 204 20 0 36 37 17 170 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
6√2
14√2
7√2
6
4
4√2
8
20
20√2
3√2
17√2