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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:66AD GHM

Order: 18

Horizontal side: 66 Vertical side: 66

Elements: 4√2, 6, 8, 6√2, 9, 8√2, 12, 9√2, 14, 15, 16, 14√2, 24, 28, 21√2, 24√2, 26√2, 33√2.

Code: 332 33 33 264 26 40 140 52 66 141 66 66 40 38 52 281 66 52 80 34 48 81 42 48 242 66 24 161 42 40 123 33 21 92 42 24 93 42 15 243 66 0 210 21 21 64 27 15 63 33 15 151 42 15

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)

33√2
26√2
14√2
14
4√2
28
8√2
8
24√2
16
12
9√2
9
24
21√2
6√2
6
15