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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:90AW GHM

Order: 18

Horizontal side: 90 Vertical side: 90

Elements: 1√2, 2, 2√2, 4, 5√2, 10, 9√2, 10√2, 16, 18, 20, 17√2, 18√2, 34, 27√2, 37√2, 54, 72.

Code: 727 0 90 96 63 81 187 72 90 186 72 72 270 63 81 343 36 20 172 53 37 541 90 54 370 53 37 26 0 18 47 2 20 56 1 15 107 6 20 106 6 10 207 16 20 25 0 16 165 0 0 14 1 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)

72
9√2
18
18√2
27√2
34
17√2
54
37√2
2√2
4
5√2
10
10√2
20
2
16
1√2