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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:78AL4of4 GHM

Order: 19

Horizontal side: 78 Vertical side: 78

Elements: 2, 2√2, 4, 4√2, 6, 9, 14, 10√2, 15, 12√2, 20, 15√2, 24, 20√2, 30, 24√2, 27√2, 48, 39√2.

Code: 485 0 30 394 39 39 276 51 51 120 51 51 91 48 39 157 48 39 150 63 39 305 0 0 204 20 10 203 40 10 67 40 30 20 46 30 21 48 30 40 44 28 41 48 28 147 40 24 240 54 24 241 78 24 104 30 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)

48
39√2
27√2
12√2
9
15
15√2
30
20√2
20
6
2√2
2
4√2
4
14
24√2
24
10√2