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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:316AE GHM

Order: 19

Horizontal side: 316 Vertical side: 316

Elements: 3√2, 6, 6√2, 20√2, 40, 42, 30√2, 48, 39√2, 40√2, 60, 78, 80, 98, 128, 158, 128√2, 188, 158√2.

Code: 1885 0 128 1584 158 158 1583 316 158 304 188 128 396 179 119 785 218 80 981 316 158 1287 0 128 1280 128 128 481 176 128 65 176 122 64 182 122 425 176 80 34 179 119 801 256 80 402 296 40 401 296 80 202 316 60 603 316 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)

188
158√2
158
30√2
39√2
78
98
128
128√2
48
6
6√2
42
3√2
80
40√2
40
20√2
60