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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:72AB GHM

Order: 19

Horizontal side: 72 Vertical side: 72

Elements: 2√2, 4, 3√2, 6, 5√2, 6√2, 10, 9√2, 10√2, 16, 20, 16√2, 17√2, 18√2, 20√2, 32, 36, 40, 36√2.

Code: 405 0 32 364 36 36 363 72 36 41 40 36 165 40 20 164 56 20 186 54 18 325 0 0 174 17 15 36 31 29 67 34 32 66 34 26 90 31 29 56 17 15 107 22 20 106 22 10 207 32 20 200 52 20 24 54 18

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)

40
36√2
36
4
16
16√2
18√2
32
17√2
3√2
6
6√2
9√2
5√2
10
10√2
20
20√2
2√2