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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:42AC GHM

Order: 18

Horizontal side: 42 Vertical side: 42

Elements: 3, 4, 5, 4√2, 6, 8, 6√2, 9, 11, 8√2, 12, 9√2, 11√2, 12√2, 20, 22, 24, 18√2.

Code: 247 0 42 203 24 22 122 36 30 121 36 42 62 42 36 61 42 42 186 24 18 46 0 18 85 4 14 84 12 14 116 9 11 225 20 0 41 24 22 92 9 9 51 9 14 37 9 14 115 9 0 93 9 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)

24
20
12√2
12
6√2
6
18√2
4√2
8
8√2
11√2
22
4
9√2
5
3
11
9