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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:84AU GHM

Order: 18

Horizontal side: 84 Vertical side: 84

Elements: 1, 2, 2√2, 4, 6, 6√2, 9, 10, 10√2, 11√2, 21, 21√2, 31, 32, 42, 32√2, 52, 42√2.

Code: 525 0 32 424 42 42 423 84 42 104 52 32 43 62 38 22 64 40 114 73 31 216 63 21 23 64 38 95 64 31 60 58 38 61 64 38 325 0 0 324 32 0 13 64 31 313 63 0 107 63 31 215 63 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)

52
42√2
42
10√2
4
2√2
11√2
21√2
2
9
6√2
6
32
32√2
1
31
10
21