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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:131AB4of4 GHM

Order: 19

Horizontal side: 131 Vertical side: 131

Elements: 1, 1√2, 2, 2√2, 3, 4, 4√2, 15, 15√2, 30, 41, 30√2, 45, 56, 41√2, 60, 45√2, 75, 86.

Code: 867 0 131 563 86 75 457 86 131 456 86 86 42 90 82 43 90 78 412 131 41 37 86 78 10 89 78 11 90 78 20 88 77 21 90 77 306 0 45 607 30 75 753 90 0 305 0 15 413 131 0 155 0 0 154 15 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)

86
56
45
45√2
4√2
4
41√2
3
1√2
1
2√2
2
30√2
60
75
30
41
15
15√2