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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:61AD GHM

Order: 18

Horizontal side: 61 Vertical side: 61

Elements: 5√2, 8, 6√2, 11, 8√2, 12, 11√2, 16, 12√2, 14√2, 21, 15√2, 22, 24, 28, 20√2, 30, 25√2.

Code: 287 0 61 163 28 45 82 36 53 221 50 61 112 61 50 111 61 61 83 36 45 142 50 39 256 36 25 126 0 33 247 12 45 303 36 15 125 0 21 52 41 20 215 0 0 64 6 15 200 41 20 154 21 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)

28
16
8√2
22
11√2
11
8
14√2
25√2
12√2
24
30
12
5√2
21
6√2
20√2
15√2