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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:440AH GHM

Order: 19

Horizontal side: 440 Vertical side: 440

Elements: 4, 4√2, 8, 8√2, 12√2, 14√2, 28, 28√2, 42, 68, 55√2, 110, 152, 110√2, 178, 152√2, 165√2, 288, 220√2.

Code: 2885 0 152 2204 220 220 1656 275 275 550 275 275 681 288 220 282 316 192 421 330 220 1102 440 110 283 316 164 142 330 178 1783 330 0 47 288 164 40 292 164 124 304 152 87 288 160 80 296 160 1525 0 0 1524 152 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)

288
220√2
165√2
55√2
68
28√2
42
110√2
28
14√2
178
4
4√2
12√2
8
8√2
152
152√2
110