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Primitive Perfect Isosceles Right Triangled Square

Title: dr 19:74AH4of4 GHM

Order: 19

Horizontal side: 74 Vertical side: 74

Elements: 1√2, 2√2, 4, 4√2, 5√2, 8, 6√2, 10, 9√2, 10√2, 18, 13√2, 19, 18√2, 28, 37, 28√2, 46, 37√2.

Code: 465 0 28 374 37 37 373 74 37 94 46 28 83 55 29 62 61 31 191 74 37 130 61 31 10 47 29 44 51 25 43 55 25 287 0 28 280 28 28 104 38 18 103 48 18 52 53 23 24 53 23 184 56 0 183 74 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)

46
37√2
37
9√2
8
6√2
19
13√2
1√2
4√2
4
28
28√2
10√2
10
5√2
2√2
18√2
18