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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:80BM12of12 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 46 60 36 85 64 32 84 72 32 206 60 20 186 42 18 45 60 32 127 60 32 287 0 28 76 21 21 147 28 28 146 28 14 107 42 28 210 21 21 205 60 0 185 42 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)

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