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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:69AB GHM

Order: 19

Horizontal side: 69 Vertical side: 69

Elements: 2√2, 4, 6, 8, 6√2, 9, 12, 13, 17, 18, 15√2, 22, 17√2, 25, 26, 22√2, 25√2, 26√2, 44.

Code: 445 0 25 264 26 43 263 52 43 172 69 52 171 69 69 156 54 37 181 44 43 125 44 31 81 52 43 20 54 37 41 56 35 135 56 22 65 44 25 64 50 25 93 56 22 255 0 0 254 25 0 220 47 22 221 69 22

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)

44
26√2
26
17√2
17
15√2
18
12
8
2√2
4
13
6
6√2
9
25
25√2
22√2
22