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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:56AQ GHM

Order: 19

Horizontal side: 56 Vertical side: 56

Elements: 1, 1√2, 2, 2√2, 3√2, 4√2, 7, 6√2, 7√2, 12, 14, 10√2, 12√2, 18, 14√2, 18√2, 28, 38, 28√2.

Code: 385 0 18 284 28 28 283 56 28 74 35 21 73 42 21 147 42 28 146 42 14 34 38 18 10 41 21 11 42 21 20 40 20 21 42 20 187 0 18 180 18 18 124 30 6 123 42 6 42 46 10 100 46 10 64 36 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)

38
28√2
28
7√2
7
14
14√2
3√2
1√2
1
2√2
2
18
18√2
12√2
12
4√2
10√2
6√2