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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:178BI3of4 GHM

Order: 19

Horizontal side: 178 Vertical side: 178

Elements: 1√2, 2, 2√2, 4, 3√2, 6, 23, 20√2, 23√2, 40, 46, 33√2, 36√2, 56, 66, 56√2, 89, 122, 89√2.

Code: 1225 0 56 894 89 89 893 178 89 334 122 56 230 155 89 231 178 89 63 132 60 467 132 66 663 178 0 16 125 59 27 126 60 26 126 58 47 128 60 403 132 20 30 125 59 567 0 56 560 56 56 364 92 20 204 112 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)

122
89√2
89
33√2
23√2
23
6
46
66
1√2
2
2√2
4
40
3√2
56
56√2
36√2
20√2