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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:66AO GHM

Order: 18

Horizontal side: 66 Vertical side: 66

Elements: 2√2, 4, 3√2, 4√2, 6, 6√2, 7√2, 9√2, 10√2, 11√2, 13√2, 20, 23, 26, 20√2, 23√2, 43, 33√2.

Code: 435 0 23 334 33 33 263 66 40 76 33 33 42 44 36 41 44 40 22 46 38 114 55 29 206 46 20 66 40 32 92 55 29 65 40 26 34 43 23 136 33 13 237 0 23 230 23 23 104 33 13 205 46 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)

43
33√2
26
7√2
4√2
4
2√2
11√2
20√2
6√2
9√2
6
3√2
13√2
23
23√2
10√2
20