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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:72AO GHM

Order: 18

Horizontal side: 72 Vertical side: 72

Elements: 3√2, 4√2, 6, 8, 6√2, 8√2, 12, 14, 16, 14√2, 22, 16√2, 17√2, 20√2, 22√2, 36, 30√2, 36√2.

Code: 365 0 36 364 36 36 306 42 42 60 42 42 147 0 36 140 14 36 174 31 19 200 48 36 227 0 22 220 22 22 61 28 22 32 31 19 164 44 0 163 60 0 82 68 8 81 68 16 42 72 12 123 72 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)

36
36√2
30√2
6√2
14
14√2
17√2
20√2
22
22√2
6
3√2
16√2
16
8√2
8
4√2
12