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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:140AJ GHM

Order: 18

Horizontal side: 140 Vertical side: 140

Elements: 4, 4√2, 6, 8, 6√2, 8√2, 14, 10√2, 16, 15√2, 30, 30√2, 50, 60, 50√2, 55√2, 90, 70√2.

Code: 905 0 50 704 70 70 556 85 85 150 85 85 161 86 70 82 94 62 141 100 70 102 110 60 83 94 54 62 100 56 603 110 0 302 140 30 63 100 50 44 90 50 43 94 50 505 0 0 504 50 0 303 140 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)

90
70√2
55√2
15√2
16
8√2
14
10√2
8
6√2
60
30√2
6
4√2
4
50
50√2
30