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Primitive Perfect Isosceles Right Triangled Square

Title: _r 18:216AE3of4 GHM

Order: 18

Horizontal side: 216 Vertical side: 216

Elements: 8√2, 10√2, 16, 20, 20√2, 38, 27√2, 40, 30√2, 54, 60, 70, 54√2, 62√2, 92, 81√2, 124, 108√2.

Code: 1245 0 92 1084 108 108 816 135 135 270 135 135 161 124 108 82 132 100 381 162 108 542 216 54 403 132 60 202 152 80 925 0 0 624 62 30 203 152 60 102 162 70 703 162 0 306 62 30 607 92 60 543 216 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)

124
108√2
81√2
27√2
16
8√2
38
54√2
40
20√2
92
62√2
20
10√2
70
30√2
60
54