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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:80AJ GHM

Order: 18

Horizontal side: 80 Vertical side: 80

Elements: 2, 2√2, 4, 3√2, 4√2, 16, 12√2, 18, 15√2, 16√2, 24, 18√2, 20√2, 32, 24√2, 38, 32√2, 40√2.

Code: 402 40 40 381 38 80 182 56 62 181 56 80 242 80 56 241 80 80 156 41 47 206 60 36 30 41 47 27 38 44 26 38 42 47 40 44 120 44 44 40 60 36 320 32 32 321 64 32 162 80 16 163 80 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)

40√2
38
18√2
18
24√2
24
15√2
20√2
3√2
2
2√2
4
12√2
4√2
32√2
32
16√2
16