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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216BO GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 2√2, 4, 4√2, 6, 7, 6√2, 7√2, 12, 14√2, 39, 46, 46√2, 78, 85, 92, 78√2, 85√2, 131, 138.

Code: 1385 0 78 1311 131 216 857 131 216 856 131 131 395 131 92 77 131 92 76 131 85 42 142 88 41 142 92 22 144 90 144 156 78 923 170 0 462 216 46 66 138 84 125 144 78 65 138 78 785 0 0 784 78 0 463 216 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)

138
131
85
85√2
39
7
7√2
4√2
4
2√2
14√2
92
46√2
6√2
12
6
78
78√2
46