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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:54AG GHM

Order: 18

Horizontal side: 54 Vertical side: 54

Elements: 1√2, 3, 3√2, 6, 5√2, 9, 7√2, 10, 11, 8√2, 14, 11√2, 16, 19, 19√2, 27, 35, 27√2.

Code: 355 0 19 274 27 27 273 54 27 84 35 19 93 43 18 112 54 16 111 54 27 197 0 19 190 19 19 141 33 19 72 40 12 14 34 18 61 40 18 32 43 15 31 43 18 163 54 0 103 43 5 54 38 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)

35
27√2
27
8√2
9
11√2
11
19
19√2
14
7√2
1√2
6
3√2
3
16
10
5√2