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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:56AN GHM

Order: 18

Horizontal side: 56 Vertical side: 56

Elements: 1√2, 2, 4√2, 6, 8, 6√2, 8√2, 12, 15, 16, 17, 18, 13√2, 15√2, 16√2, 26, 24√2, 28√2.

Code: 282 28 28 261 26 56 132 39 43 154 41 41 153 56 41 16 38 42 25 39 41 123 38 30 185 38 24 171 56 41 64 32 24 63 38 24 40 28 28 240 24 24 164 40 8 163 56 8 84 48 0 83 56 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)

28√2
26
13√2
15√2
15
1√2
2
12
18
17
6√2
6
4√2
24√2
16√2
16
8√2
8