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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:80BM6of12 GHM

Order: 19

Horizontal side: 80 Vertical side: 80

Elements: 4, 4√2, 8, 7√2, 10, 8√2, 12, 14, 12√2, 18, 14√2, 20, 18√2, 28, 20√2, 21√2, 40, 52, 40√2.

Code: 525 0 28 404 40 40 403 80 40 124 52 28 40 64 40 41 68 40 127 68 40 206 60 20 186 42 18 82 68 28 81 68 36 142 14 14 214 21 7 283 42 0 107 42 28 205 60 0 185 42 0 143 14 0 72 21 7

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)

52
40√2
40
12√2
4√2
4
12
20√2
18√2
8√2
8
14√2
21√2
28
10
20
18
14
7√2