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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:118AL GHM

Order: 18

Horizontal side: 118 Vertical side: 118

Elements: 1√2, 9√2, 14, 18, 14√2, 18√2, 26, 28, 26√2, 38, 27√2, 28√2, 40, 52, 38√2, 39√2, 40√2, 52√2.

Code: 525 0 66 524 52 66 140 104 118 141 118 118 280 90 104 281 118 104 96 53 67 187 62 76 186 62 58 387 80 76 386 80 38 270 53 67 265 0 40 264 26 40 405 0 0 404 40 0 16 79 39 390 79 39

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)

52
52√2
14√2
14
28√2
28
9√2
18
18√2
38
38√2
27√2
26
26√2
40
40√2
1√2
39√2