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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:90AD GHM

Order: 18

Horizontal side: 90 Vertical side: 90

Elements: 1√2, 4√2, 12√2, 14√2, 15√2, 22, 16√2, 24, 28, 20√2, 22√2, 32, 24√2, 34, 28√2, 42, 44, 34√2.

Code: 425 0 48 284 28 62 283 56 62 347 56 90 346 56 56 144 42 48 156 41 47 122 68 44 242 24 24 204 20 28 160 40 48 14 41 47 443 68 0 222 90 22 46 20 28 327 24 32 243 24 0 223 90 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)

42
28√2
28
34
34√2
14√2
15√2
12√2
24√2
20√2
16√2
1√2
44
22√2
4√2
32
24
22