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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:142BS GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 2√2, 4, 4√2, 5√2, 6√2, 10, 10√2, 20, 25√2, 42, 30√2, 50, 42√2, 62, 70, 50√2, 80, 92.

Code: 927 0 142 623 92 80 507 92 142 506 92 92 62 98 86 20 98 86 40 96 84 41 100 84 422 142 42 306 0 50 707 30 80 803 100 0 252 25 25 423 142 0 50 25 25 203 20 0 102 30 10 101 30 20

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)

92
62
50
50√2
6√2
2√2
4√2
4
42√2
30√2
70
80
25√2
42
5√2
20
10√2
10