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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:68AB2of4 GHM

Order: 19

Horizontal side: 68 Vertical side: 68

Elements: 3, 3√2, 4√2, 6, 8, 9, 8√2, 9√2, 10√2, 12√2, 20, 15√2, 24, 28, 20√2, 30, 24√2, 28√2, 40.

Code: 285 0 40 284 28 40 30 56 68 31 59 68 97 59 68 96 59 59 150 53 65 61 59 65 100 38 50 301 68 50 245 0 16 244 24 16 403 48 0 202 68 20 203 68 0 82 8 8 124 12 4 83 8 0 42 12 4

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)

28
28√2
3√2
3
9
9√2
15√2
6
10√2
30
24
24√2
40
20√2
20
8√2
12√2
8
4√2