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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:90AO GHM

Order: 19

Horizontal side: 90 Vertical side: 90

Elements: 1√2, 3√2, 8, 8√2, 9√2, 11√2, 16, 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 38 163 68 38 82 76 46 114 79 43 146 76 40 83 76 38 32 79 43 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
16
8√2
11√2
14√2
8
3√2
1√2
13√2
38
38√2
26√2
26