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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:61AC GHM

Order: 18

Horizontal side: 61 Vertical side: 61

Elements: 4, 3√2, 4√2, 6, 7, 8, 7√2, 14, 15, 19, 14√2, 15√2, 26, 27, 28, 20√2, 23√2, 27√2.

Code: 275 0 34 274 27 34 70 54 61 71 61 61 283 47 26 142 61 40 141 61 54 206 41 20 197 0 34 46 15 30 87 19 34 156 0 15 45 15 26 267 15 26 36 38 23 67 41 26 230 38 23 155 0 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)

27
27√2
7√2
7
28
14√2
14
20√2
19
4√2
8
15√2
4
26
3√2
6
23√2
15