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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:56AB GHM

Order: 19

Horizontal side: 56 Vertical side: 56

Elements: 2√2, 4, 6, 5√2, 8, 10, 8√2, 14, 10√2, 16, 12√2, 14√2, 20, 15√2, 16√2, 24, 18√2, 20√2, 24√2.

Code: 245 0 32 244 24 32 163 48 40 82 56 48 81 56 56 146 42 34 56 27 35 107 32 40 106 32 30 67 42 40 150 27 35 145 42 20 162 16 16 124 12 20 41 16 20 22 18 18 204 36 0 203 56 0 180 18 18

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)

24
24√2
16
8√2
8
14√2
5√2
10
10√2
6
15√2
14
16√2
12√2
4
2√2
20√2
20
18√2