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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:166AE1of4 GHM

Order: 19

Horizontal side: 166 Vertical side: 166

Elements: 9√2, 12√2, 18, 24, 18√2, 24√2, 36, 37, 28√2, 48, 36√2, 37√2, 55, 56, 72, 74, 55√2, 56√2, 74√2.

Code: 745 0 92 744 74 92 180 148 166 181 166 166 120 130 148 361 166 148 723 118 64 247 118 136 240 142 136 487 118 112 566 110 56 375 0 55 374 37 55 90 46 64 364 82 28 286 82 28 565 110 0 557 0 55 550 55 55

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)

74
74√2
18√2
18
12√2
36
72
24
24√2
48
56√2
37
37√2
9√2
36√2
28√2
56
55
55√2