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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:214AA GHM

Order: 18

Horizontal side: 214 Vertical side: 214

Elements: 2, 10√2, 18, 20, 28, 20√2, 21√2, 23√2, 28√2, 42, 56, 42√2, 65, 86, 107, 86√2, 128, 107√2.

Code: 1285 0 86 1074 107 107 1073 214 107 214 128 86 230 149 107 651 214 107 867 0 86 860 86 86 204 106 66 203 126 66 27 126 86 187 126 84 280 144 84 281 172 84 422 214 42 104 116 56 561 172 56 423 214 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)

128
107√2
107
21√2
23√2
65
86
86√2
20√2
20
2
18
28√2
28
42√2
10√2
56
42