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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:144AI GHM

Order: 18

Horizontal side: 144 Vertical side: 144

Elements: 1√2, 6, 6√2, 12, 9√2, 10√2, 11√2, 20, 22, 19√2, 22√2, 44, 50, 61, 72, 83, 61√2, 72√2.

Code: 835 0 61 724 72 72 723 144 72 114 83 61 123 94 60 62 100 66 501 144 72 63 100 60 445 100 22 617 0 61 610 61 61 201 81 61 102 91 51 14 82 60 94 91 51 196 81 41 224 122 0 223 144 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)

83
72√2
72
11√2
12
6√2
50
6
44
61
61√2
20
10√2
1√2
9√2
19√2
22√2
22