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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:90AN GHM

Order: 19

Horizontal side: 90 Vertical side: 90

Elements: 1√2, 4√2, 8, 8√2, 9√2, 14, 12√2, 18, 13√2, 14√2, 16√2, 18√2, 26, 26√2, 38, 27√2, 36√2, 52, 38√2.

Code: 525 0 38 364 36 54 96 63 81 187 72 90 186 72 72 270 63 81 164 52 38 46 64 50 87 68 54 86 68 46 147 76 54 146 76 40 120 64 50 12 77 39 130 77 39 385 0 0 384 38 0 260 64 26 261 90 26

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)

52
36√2
9√2
18
18√2
27√2
16√2
4√2
8
8√2
14
14√2
12√2
1√2
13√2
38
38√2
26√2
26