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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:68AB4of4 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: 407 0 68 246 16 44 287 40 68 286 40 40 126 4 32 245 16 20 102 50 30 40 4 32 303 50 0 152 65 15 87 0 28 80 8 28 205 0 0 204 20 0 63 65 9 32 68 12 33 68 9 90 59 9 91 68 9

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