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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:40AG GHM

Order: 19

Horizontal side: 40 Vertical side: 40

Elements: 1, 1√2, 2, 2√2, 4, 3√2, 4√2, 7, 8, 6√2, 7√2, 8√2, 12, 14, 16, 12√2, 14√2, 18√2, 28.

Code: 287 0 40 163 28 24 82 36 32 81 36 40 42 40 36 41 40 40 186 22 18 126 0 12 25 12 22 24 14 22 30 16 24 64 22 18 15 12 21 14 13 21 77 12 21 70 19 21 147 12 14 140 26 14 125 0 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)

28
16
8√2
8
4√2
4
18√2
12√2
2
2√2
3√2
6√2
1
1√2
7
7√2
14
14√2
12