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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:66AR GHM

Order: 18

Horizontal side: 66 Vertical side: 66

Elements: 2√2, 4, 3√2, 6, 7, 8, 6√2, 7√2, 9√2, 14, 18, 13√2, 22, 26, 22√2, 33, 44, 33√2.

Code: 445 0 22 334 33 33 333 66 33 134 46 20 70 59 33 71 66 33 83 52 18 147 52 26 263 66 0 225 0 0 224 22 0 43 44 18 22 46 20 183 40 0 92 49 9 64 46 12 63 52 12 34 49 9

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)

44
33√2
33
13√2
7√2
7
8
14
26
22
22√2
4
2√2
18
9√2
6√2
6
3√2