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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:80AM GHM

Order: 18

Horizontal side: 80 Vertical side: 80

Elements: 5, 5√2, 8, 10, 8√2, 12, 10√2, 16, 12√2, 15√2, 16√2, 25, 28, 30, 32, 40, 35√2, 40√2.

Code: 405 0 40 404 40 40 356 45 45 53 45 40 305 45 15 127 0 40 126 0 28 87 12 40 80 20 40 251 45 40 167 12 32 166 12 16 325 28 0 285 0 0 154 60 0 50 75 15 100 70 10 101 80 10

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)

40
40√2
35√2
5
30
12
12√2
8
8√2
25
16
16√2
32
28
15√2
5√2
10√2
10