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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:218BI GHM

Order: 19

Horizontal side: 218 Vertical side: 218

Elements: 1√2, 2, 2√2, 3√2, 10√2, 20, 20√2, 39, 40, 35√2, 39√2, 40√2, 64, 70, 74, 74√2, 109, 144, 109√2.

Code: 1445 0 74 1094 109 109 1093 218 109 354 144 74 390 179 109 391 218 109 747 0 74 740 74 74 641 138 74 22 140 72 34 141 71 23 140 70 12 141 71 405 138 30 404 178 30 703 218 0 205 138 10 204 158 10 104 148 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)

144
109√2
109
35√2
39√2
39
74
74√2
64
2√2
3√2
2
1√2
40
40√2
70
20
20√2
10√2