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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:220CD GHM

Order: 19

Horizontal side: 220 Vertical side: 220

Elements: 2√2, 4, 4√2, 6, 7, 6√2, 12, 14√2, 25, 32, 39, 39√2, 71, 78, 71√2, 110, 78√2, 142, 110√2.

Code: 1425 0 78 1104 110 110 1103 220 110 321 142 110 142 156 96 394 181 71 393 220 71 123 156 84 255 156 71 20 144 84 64 150 78 63 156 78 47 142 82 40 146 82 785 0 0 784 78 0 73 156 71 710 149 71 711 220 71

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)

142
110√2
110
32
14√2
39√2
39
12
25
2√2
6√2
6
4
4√2
78
78√2
7
71√2
71