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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:66AH GHM

Order: 18

Horizontal side: 66 Vertical side: 66

Elements: 2√2, 4, 3√2, 4√2, 6, 8, 6√2, 8√2, 9√2, 14, 18, 14√2, 18√2, 28, 30, 36, 27√2, 33√2.

Code: 365 0 30 334 33 33 303 66 36 36 33 33 65 36 30 64 42 30 96 39 27 187 48 36 186 48 18 147 0 30 146 0 16 287 14 30 270 39 27 82 8 8 83 8 0 42 12 4 43 12 0 22 14 2

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)

36
33√2
30
3√2
6
6√2
9√2
18
18√2
14
14√2
28
27√2
8√2
8
4√2
4
2√2