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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:53AB1of2 GHM

Order: 18

Horizontal side: 53 Vertical side: 53

Elements: 2√2, 4, 3√2, 4√2, 6, 8, 6√2, 8√2, 12, 9√2, 11√2, 19, 15√2, 23, 17√2, 19√2, 30, 34.

Code: 345 0 19 301 30 53 92 39 44 231 53 53 30 39 44 60 36 41 61 42 41 112 53 30 127 30 35 86 34 27 156 38 15 46 30 23 85 34 19 195 0 0 194 19 0 26 36 17 47 38 19 170 36 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
30
9√2
23
3√2
6√2
6
11√2
12
8√2
15√2
4√2
8
19
19√2
2√2
4
17√2