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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:128AE GHM

Order: 18

Horizontal side: 128 Vertical side: 128

Elements: 4, 4√2, 8, 6√2, 8√2, 12√2, 14√2, 17√2, 20√2, 34, 40, 48, 37√2, 54, 40√2, 48√2, 74, 80.

Code: 805 0 48 741 74 128 372 111 91 541 128 128 170 111 91 140 94 74 341 128 74 66 74 54 47 80 60 40 84 60 124 96 48 200 108 60 87 80 56 80 88 56 485 0 0 484 48 0 400 88 40 401 128 40

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)

80
74
37√2
54
17√2
14√2
34
6√2
4
4√2
12√2
20√2
8
8√2
48
48√2
40√2
40