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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:72AB GHM

Order: 18

Horizontal side: 72 Vertical side: 72

Elements: 4√2, 8, 10, 8√2, 9√2, 10√2, 16, 12√2, 18, 20, 16√2, 24, 18√2, 26, 20√2, 24√2, 27√2, 36√2.

Code: 362 36 36 274 27 45 180 54 72 181 72 72 96 27 45 267 36 54 100 62 54 101 72 54 166 36 28 202 72 24 201 72 44 126 24 24 165 36 12 240 24 24 243 72 0 84 44 4 83 52 4 44 48 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)

36√2
27√2
18√2
18
9√2
26
10√2
10
16√2
20√2
20
12√2
16
24√2
24
8√2
8
4√2