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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:72AW1of2 GHM

Order: 18

Horizontal side: 72 Vertical side: 72

Elements: 2, 2√2, 4, 6, 8, 6√2, 7√2, 8√2, 14, 16, 13√2, 16√2, 24, 20√2, 32, 40, 32√2, 36√2.

Code: 407 0 72 320 40 72 321 72 72 80 8 40 81 16 40 247 16 40 43 40 36 67 40 40 60 46 40 134 59 27 206 52 20 360 36 36 24 38 34 23 40 34 141 52 34 72 59 27 162 16 16 161 16 32

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
32√2
32
8√2
8
24
4
6
6√2
13√2
20√2
36√2
2√2
2
14
7√2
16√2
16