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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:78AK GHM

Order: 19

Horizontal side: 78 Vertical side: 78

Elements: 1, 2√2, 4, 4√2, 6, 6√2, 8√2, 12, 9√2, 15, 16, 14√2, 16√2, 23, 31, 39, 31√2, 47, 39√2.

Code: 475 0 31 394 39 39 393 78 39 84 47 31 90 55 39 231 78 39 317 0 31 310 31 31 151 46 31 17 46 31 67 46 30 66 46 24 127 52 30 140 64 30 42 50 20 43 50 16 22 52 18 164 62 0 163 78 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
9√2
23
31
31√2
15
1
6
6√2
12
14√2
4√2
4
2√2
16√2
16