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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:80AJ1of2 GHM

Order: 19

Horizontal side: 80 Vertical side: 80

Elements: 4, 4√2, 7, 8, 8√2, 12, 9√2, 14, 18, 14√2, 20, 18√2, 19√2, 28, 20√2, 31, 40, 33√2, 40√2.

Code: 405 0 40 404 40 40 336 47 47 73 47 40 192 66 28 202 20 20 84 8 32 83 16 32 42 20 36 311 47 40 43 20 32 182 38 18 121 20 32 283 66 0 142 80 14 203 20 0 183 38 0 92 47 9 143 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)

40
40√2
33√2
7
19√2
20√2
8√2
8
4√2
31
4
18√2
12
28
14√2
20
18
9√2
14