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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:55AD GHM

Order: 18

Horizontal side: 55 Vertical side: 55

Elements: 4, 5, 4√2, 5√2, 8, 6√2, 10, 8√2, 14, 15, 16, 12√2, 20, 15√2, 25, 18√2, 35, 25√2.

Code: 357 0 55 126 23 43 207 35 55 163 55 39 180 23 43 46 35 35 85 39 31 84 47 31 143 55 25 45 35 31 64 41 25 56 0 20 105 5 15 254 30 0 253 55 0 55 0 15 157 0 15 150 15 15

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)

35
12√2
20
16
18√2
4√2
8
8√2
14
4
6√2
5√2
10
25√2
25
5
15
15√2