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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:78AH GHM

Order: 19

Horizontal side: 78 Vertical side: 78

Elements: 2√2, 4, 4√2, 6, 8, 6√2, 7√2, 8√2, 12, 9√2, 16, 14√2, 23, 24, 31, 39, 31√2, 47, 39√2.

Code: 475 0 31 394 39 39 393 78 39 84 47 31 83 55 31 142 69 25 231 78 39 317 0 31 310 31 31 241 55 31 123 69 13 92 78 16 163 78 0 20 57 13 64 63 7 63 69 7 47 55 11 40 59 11 74 62 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)

47
39√2
39
8√2
8
14√2
23
31
31√2
24
12
9√2
16
2√2
6√2
6
4
4√2
7√2