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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:80AV GHM

Order: 19

Horizontal side: 80 Vertical side: 80

Elements: 1√2, 4, 5, 4√2, 5√2, 8, 6√2, 10, 9√2, 15, 18, 22, 16√2, 18√2, 31, 40, 31√2, 49, 40√2.

Code: 495 0 31 404 40 40 403 80 40 94 49 31 83 58 32 42 62 36 221 80 40 43 62 32 182 80 18 10 50 32 64 56 26 166 46 16 317 0 31 310 31 31 151 46 31 57 46 31 50 51 31 107 46 26 183 80 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)

49
40√2
40
9√2
8
4√2
22
4
18√2
1√2
6√2
16√2
31
31√2
15
5
5√2
10
18