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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:440AI GHM

Order: 19

Horizontal side: 440 Vertical side: 440

Elements: 6√2, 8√2, 12, 16, 12√2, 16√2, 24, 36, 42, 68, 55√2, 110, 152, 110√2, 178, 152√2, 165√2, 288, 220√2.

Code: 2885 0 152 2204 220 220 1656 275 275 550 275 275 681 288 220 365 288 184 421 330 220 1102 440 110 162 304 168 241 312 184 122 324 172 121 324 184 62 330 178 1783 330 0 163 304 152 82 312 160 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
36
42
110√2
16√2
24
12√2
12
6√2
178
16
8√2
152
152√2
110