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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:69AA GHM

Order: 18

Horizontal side: 69 Vertical side: 69

Elements: 6, 8, 6√2, 8√2, 12, 13, 11√2, 16, 18, 13√2, 15√2, 16√2, 24, 26, 30, 24√2, 27√2, 45.

Code: 457 0 69 276 18 42 162 61 53 161 61 69 82 69 61 81 69 69 246 45 37 183 18 24 125 18 30 112 56 26 65 18 24 64 24 24 303 30 0 152 45 15 263 56 0 132 69 13 247 0 24 133 69 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)

45
27√2
16√2
16
8√2
8
24√2
18
12
11√2
6
6√2
30
15√2
26
13√2
24
13