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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:40AJ GHM

Order: 18

Horizontal side: 40 Vertical side: 40

Elements: 2, 2√2, 4, 5, 4√2, 5√2, 8, 9, 7√2, 10, 8√2, 12, 10√2, 11√2, 18, 20, 22, 20√2.

Code: 225 0 18 204 20 20 203 40 20 24 22 18 46 20 16 85 24 12 84 32 12 106 30 10 185 0 0 114 11 7 93 20 7 45 20 12 55 20 7 54 25 7 123 30 0 27 30 12 105 30 0 74 18 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)

22
20√2
20
2√2
4√2
8
8√2
10√2
18
11√2
9
4
5
5√2
12
2
10
7√2