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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:216AI GHM

Order: 18

Horizontal side: 216 Vertical side: 216

Elements: 10√2, 18, 28, 21√2, 22√2, 28√2, 42, 44, 46, 56, 42√2, 64, 86, 88, 64√2, 65√2, 130, 108√2.

Code: 1305 0 86 1084 108 108 646 152 152 443 152 108 645 152 88 224 130 86 106 142 98 563 142 42 282 170 70 181 170 88 467 170 88 883 216 0 865 0 0 654 65 21 283 170 42 216 65 21 425 86 0 424 128 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)

130
108√2
64√2
44
64
22√2
10√2
56
28√2
18
46
88
86
65√2
28
21√2
42
42√2