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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:68AB3of4 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: 405 0 28 244 24 44 243 48 44 202 68 48 201 68 68 303 68 18 124 36 32 86 40 36 46 36 32 85 40 28 287 0 28 280 28 28 104 38 18 154 53 3 96 59 9 63 59 3 95 59 0 34 56 0 33 59 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)

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