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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:120BJ GHM

Order: 19

Horizontal side: 120 Vertical side: 120

Elements: 1, 1√2, 2, 3, 3√2, 6, 6√2, 12, 9√2, 15√2, 30, 39, 40, 41, 30√2, 40√2, 60, 80, 60√2.

Code: 805 0 40 604 60 60 603 120 60 154 75 45 123 90 48 307 90 60 306 90 30 36 75 45 65 78 42 64 84 42 96 81 39 21 80 42 12 81 41 11 81 42 37 81 42 413 81 0 405 0 0 404 40 0 395 81 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)

80
60√2
60
15√2
12
30
30√2
3√2
6
6√2
9√2
2
1√2
1
3
41
40
40√2
39