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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:180AD GHM

Order: 19

Horizontal side: 180 Vertical side: 180

Elements: 8√2, 17, 18, 21, 26, 21√2, 34, 35, 36, 26√2, 27√2, 47, 34√2, 36√2, 72, 55√2, 72√2, 73√2, 90√2.

Code: 902 90 90 734 73 107 473 146 133 342 180 146 341 180 180 556 125 91 260 99 133 261 125 133 212 146 112 211 146 133 171 90 107 357 90 107 86 117 99 270 117 99 183 90 72 720 72 72 721 144 72 362 180 36 363 180 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)

90√2
73√2
47
34√2
34
55√2
26√2
26
21√2
21
17
35
8√2
27√2
18
72√2
72
36√2
36