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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:102AJ GHM

Order: 18

Horizontal side: 102 Vertical side: 102

Elements: 6, 6√2, 9, 11, 12, 11√2, 18, 20, 22, 24, 20√2, 31, 40, 42, 30√2, 51, 60, 51√2.

Code: 605 0 42 514 51 51 513 102 51 91 60 51 117 60 51 110 71 51 311 102 51 425 0 0 304 30 12 243 60 18 227 60 40 403 82 0 202 102 20 203 102 0 60 36 18 61 42 18 187 42 18 121 42 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)

60
51√2
51
9
11
11√2
31
42
30√2
24
22
40
20√2
20
6√2
6
18
12