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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:440AE GHM

Order: 19

Horizontal side: 440 Vertical side: 440

Elements: 4√2, 8, 8√2, 12, 12√2, 24, 18√2, 28√2, 46, 64, 55√2, 110, 110√2, 156, 174, 156√2, 165√2, 284, 220√2.

Code: 2845 0 156 2204 220 220 1656 275 275 550 275 275 641 284 220 282 312 192 461 330 220 1102 440 110 243 312 168 182 330 174 1743 330 0 40 288 168 124 300 156 123 312 156 87 284 164 80 292 164 1565 0 0 1564 156 0 1103 440 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)

284
220√2
165√2
55√2
64
28√2
46
110√2
24
18√2
174
4√2
12√2
12
8
8√2
156
156√2
110