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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:40AE GHM

Order: 19

Horizontal side: 40 Vertical side: 40

Elements: 2√2, 3, 4, 3√2, 5, 6, 5√2, 6√2, 7√2, 10, 11, 12, 13, 14, 11√2, 12√2, 18, 22, 20√2.

Code: 225 0 18 204 20 20 183 40 22 26 20 20 47 22 22 76 19 15 147 26 22 116 29 11 67 0 18 60 6 18 131 19 18 37 19 18 105 19 5 127 0 12 120 12 12 36 26 8 115 29 0 54 24 0 53 29 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)

22
20√2
18
2√2
4
7√2
14
11√2
6
6√2
13
3
10
12
12√2
3√2
11
5√2
5