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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:116AD GHM

Order: 18

Horizontal side: 116 Vertical side: 116

Elements: 9√2, 11√2, 18, 21, 22, 18√2, 20√2, 21√2, 22√2, 36, 40, 42, 45, 33√2, 36√2, 38√2, 40√2, 47√2.

Code: 472 47 69 384 38 78 206 56 96 407 76 116 406 76 76 183 56 78 425 56 54 94 47 69 453 56 33 215 56 33 214 77 33 180 98 54 360 80 36 361 116 36 110 11 33 334 44 0 227 0 22 220 22 22

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)

47√2
38√2
20√2
40
40√2
18
42
9√2
45
21
21√2
18√2
36√2
36
11√2
33√2
22
22√2