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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:120AN GHM

Order: 18

Horizontal side: 120 Vertical side: 120

Elements: 6√2, 7√2, 8√2, 12, 14, 12√2, 15√2, 22, 24, 30, 36, 26√2, 30√2, 52, 38√2, 60, 68, 60√2.

Code: 687 0 120 363 68 84 227 68 120 156 75 105 307 90 120 306 90 90 70 75 105 147 68 98 380 82 98 66 26 78 127 32 84 126 32 72 247 44 84 260 26 78 84 52 52 600 60 60 601 120 60 527 0 52

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)

68
36
22
15√2
30
30√2
7√2
14
38√2
6√2
12
12√2
24
26√2
8√2
60√2
60
52