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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:142AX GHM

Order: 19

Horizontal side: 142 Vertical side: 142

Elements: 3√2, 6, 6√2, 11, 12, 18, 20, 20√2, 21√2, 31, 40, 30√2, 31√2, 51, 40√2, 60, 71, 82, 71√2.

Code: 827 0 142 400 82 142 401 122 142 202 142 122 201 142 142 513 142 71 123 42 90 187 42 102 216 39 81 315 60 71 314 91 71 300 30 90 64 36 84 63 42 84 34 39 81 117 60 71 710 71 71 711 142 71 607 0 60

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)

82
40√2
40
20√2
20
51
12
18
21√2
31
31√2
30√2
6√2
6
3√2
11
71√2
71
60