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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:53AE GHM

Order: 19

Horizontal side: 53 Vertical side: 53

Elements: 1√2, 2, 2√2, 4, 5, 5√2, 6√2, 7√2, 10, 11, 12, 13, 15, 12√2, 13√2, 26, 20√2, 21√2, 40.

Code: 407 0 53 263 40 27 132 53 40 131 53 53 206 33 20 120 14 27 121 26 27 62 32 21 74 33 20 210 32 21 26 0 13 47 2 15 50 6 15 51 11 15 157 11 15 25 0 11 115 0 0 14 1 10 101 11 10

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)

40
26
13√2
13
20√2
12√2
12
6√2
7√2
21√2
2√2
4
5√2
5
15
2
11
1√2
10