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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:60AE GHM

Order: 18

Horizontal side: 60 Vertical side: 60

Elements: 2, 5, 6, 7, 9, 11, 12, 13, 14, 11√2, 12√2, 17, 14√2, 24, 17√2, 23√2, 24√2, 30√2.

Code: 302 30 30 244 24 36 243 48 36 122 60 48 121 60 60 176 43 31 61 30 36 137 30 36 116 32 25 57 43 36 175 43 14 73 30 23 23 32 23 115 32 14 230 23 23 91 32 23 144 46 0 143 60 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)

30√2
24√2
24
12√2
12
17√2
6
13
11√2
5
17
7
2
11
23√2
9
14√2
14