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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:74AS GHM

Order: 18

Horizontal side: 74 Vertical side: 74

Elements: 6, 6√2, 7√2, 11, 8√2, 12, 14, 16, 17, 18, 16√2, 23, 28, 30, 22√2, 23√2, 44, 51.

Code: 515 0 23 441 44 74 222 66 52 301 74 74 80 66 52 143 58 30 162 74 28 161 74 44 74 51 23 183 58 12 283 74 0 237 0 23 230 23 23 171 40 23 117 40 23 67 40 12 66 40 6 127 46 12

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)

51
44
22√2
30
8√2
14
16√2
16
7√2
18
28
23
23√2
17
11
6
6√2
12