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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:56AA GHM

Order: 19

Horizontal side: 56 Vertical side: 56

Elements: 1√2, 2√2, 4, 5, 4√2, 7, 5√2, 8, 7√2, 10, 12√2, 20, 22, 16√2, 24, 18√2, 20√2, 22√2, 24√2.

Code: 245 0 32 244 24 32 46 44 52 87 48 56 76 49 49 103 44 42 52 49 47 16 48 48 75 49 42 53 49 42 220 34 42 221 56 42 162 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
4√2
8
7√2
10
5√2
1√2
7
5
22√2
22
16√2
12√2
4
2√2
20√2
20
18√2