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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:72BH GHM

Order: 18

Horizontal side: 72 Vertical side: 72

Elements: 1, 1√2, 3√2, 6, 6√2, 7√2, 8√2, 9√2, 13, 16, 13√2, 20, 16√2, 28, 36, 28√2, 44, 36√2.

Code: 445 0 28 364 36 36 363 72 36 84 44 28 70 52 36 201 72 36 10 45 29 11 46 29 137 46 29 130 59 29 287 0 28 280 28 28 94 37 19 66 40 22 36 37 19 65 40 16 164 56 0 163 72 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)

44
36√2
36
8√2
7√2
20
1√2
1
13
13√2
28
28√2
9√2
6√2
3√2
6
16√2
16