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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:120AI GHM

Order: 18

Horizontal side: 120 Vertical side: 120

Elements: 4√2, 10, 10√2, 14√2, 20, 22, 17√2, 28, 22√2, 32, 34, 27√2, 28√2, 32√2, 54, 56, 66, 60√2.

Code: 667 0 120 276 39 93 547 66 120 606 60 60 170 39 93 226 0 54 347 22 76 203 56 56 102 66 66 40 60 60 146 22 42 287 36 56 286 36 28 565 64 0 225 0 32 105 22 32 327 0 32 320 32 32

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)

66
27√2
54
60√2
17√2
22√2
34
20
10√2
4√2
14√2
28
28√2
56
22
10
32
32√2