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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:180BQ GHM

Order: 19

Horizontal side: 180 Vertical side: 180

Elements: 4, 4√2, 8, 7√2, 12, 13√2, 26, 26√2, 52, 38√2, 39√2, 45√2, 64, 46√2, 50√2, 52√2, 78, 64√2, 128.

Code: 1287 0 180 783 128 102 392 167 141 264 154 154 263 180 154 134 167 141 456 135 109 70 135 109 500 50 102 464 96 56 380 142 102 83 104 56 127 104 64 640 116 64 641 180 64 44 100 52 43 104 52 525 0 0 524 52 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)

128
78
39√2
26√2
26
13√2
45√2
7√2
50√2
46√2
38√2
8
12
64√2
64
4√2
4
52
52√2