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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:240AI GHM

Order: 19

Horizontal side: 240 Vertical side: 240

Elements: 7√2, 15√2, 17√2, 19√2, 30, 23√2, 34, 38, 42, 46, 39√2, 42√2, 64, 78, 81, 81√2, 120, 159, 120√2.

Code: 1595 0 81 1204 120 120 1203 240 120 394 159 81 463 198 74 422 240 78 421 240 120 817 0 81 810 81 81 641 145 81 305 145 51 74 152 74 783 240 0 234 175 51 383 198 36 345 145 17 154 160 36 194 179 17 174 162 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)

159
120√2
120
39√2
46
42√2
42
81
81√2
64
30
7√2
78
23√2
38
34
15√2
19√2
17√2