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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:90AV GHM

Order: 19

Horizontal side: 90 Vertical side: 90

Elements: 1√2, 2, 2√2, 3√2, 6, 10, 12, 18, 20, 24, 18√2, 20√2, 30, 36, 26√2, 40, 30√2, 36√2, 60.

Code: 605 0 30 364 36 54 363 72 54 182 90 72 181 90 90 266 64 46 241 60 54 127 60 54 36 61 43 65 64 40 10 61 43 27 60 42 20 62 42 107 60 40 403 70 0 202 90 20 305 0 0 304 30 0 203 90 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)

60
36√2
36
18√2
18
26√2
24
12
3√2
6
1√2
2
2√2
10
40
20√2
30
30√2
20