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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:55AB GHM

Order: 18

Horizontal side: 55 Vertical side: 55

Elements: 2√2, 5, 5√2, 8, 10, 11, 8√2, 14, 10√2, 11√2, 16, 19, 20, 24, 25, 18√2, 20√2, 25√2.

Code: 255 0 30 254 25 30 50 50 55 51 55 55 100 45 50 101 55 50 243 35 16 207 35 40 206 35 20 117 0 30 116 0 19 147 11 30 22 37 18 195 0 0 180 37 18 87 11 16 86 11 8 167 19 16

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)

25
25√2
5√2
5
10√2
10
24
20
20√2
11
11√2
14
2√2
19
18√2
8
8√2
16