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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:312BG GHM

Order: 19

Horizontal side: 312 Vertical side: 312

Elements: 2√2, 4, 4√2, 6√2, 8√2, 10√2, 20, 20√2, 30, 48, 39√2, 78, 108, 78√2, 126, 108√2, 117√2, 204, 156√2.

Code: 2045 0 108 1564 156 156 1176 195 195 390 195 195 481 204 156 202 224 136 301 234 156 782 312 78 203 224 116 102 234 126 1263 234 0 42 208 112 41 208 116 22 210 114 84 216 108 60 210 114 1085 0 0 1084 108 0 783 312 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)

204
156√2
117√2
39√2
48
20√2
30
78√2
20
10√2
126
4√2
4
2√2
8√2
6√2
108
108√2
78