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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:74AL GHM

Order: 19

Horizontal side: 74 Vertical side: 74

Elements: 1, 1√2, 2, 3, 3√2, 5√2, 10, 9√2, 10√2, 11√2, 17, 18, 20, 18√2, 27, 37, 27√2, 47, 37√2.

Code: 475 0 27 374 37 37 373 74 37 104 47 27 103 57 27 52 62 32 171 74 37 23 62 30 12 63 31 13 63 30 112 74 20 30 60 30 31 63 30 277 0 27 270 27 27 184 45 9 183 63 9 203 74 0 94 54 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)

47
37√2
37
10√2
10
5√2
17
2
1√2
1
11√2
3√2
3
27
27√2
18√2
18
20
9√2