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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:78AC GHM

Order: 19

Horizontal side: 78 Vertical side: 78

Elements: 4, 4√2, 5√2, 12, 9√2, 16, 12√2, 18, 22, 16√2, 17√2, 18√2, 28, 22√2, 32, 23√2, 34, 28√2, 46.

Code: 465 0 32 341 34 78 172 51 61 224 56 56 223 78 56 50 51 61 126 34 44 165 46 40 164 62 40 286 50 28 42 50 36 41 50 40 127 50 40 186 32 18 325 0 0 234 23 9 285 50 0 96 23 9 185 32 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
34
17√2
22√2
22
5√2
12√2
16
16√2
28√2
4√2
4
12
18√2
32
23√2
28
9√2
18