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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:140AA GHM

Order: 18

Horizontal side: 140 Vertical side: 140

Elements: 6, 6√2, 7√2, 12, 26, 28, 26√2, 28√2, 40, 42, 46, 52, 56, 58, 42√2, 49√2, 72, 56√2.

Code: 727 0 140 463 72 94 407 72 140 280 112 140 281 140 140 123 84 100 567 84 112 566 84 56 65 72 94 64 78 94 583 84 42 266 0 68 527 26 94 265 0 42 72 91 49 490 91 49 425 0 0 424 42 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)

72
46
40
28√2
28
12
56
56√2
6
6√2
58
26√2
52
26
7√2
49√2
42
42√2