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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:72AA GHM

Order: 18

Horizontal side: 72 Vertical side: 72

Elements: 4√2, 8, 8√2, 12, 9√2, 10√2, 16, 18, 13√2, 20, 16√2, 24, 18√2, 26, 20√2, 23√2, 27√2, 36√2.

Code: 362 36 36 274 27 45 180 54 72 181 72 72 96 27 45 247 36 54 40 60 54 121 72 54 206 36 30 87 56 50 80 64 50 162 72 26 161 72 42 136 23 23 205 36 10 263 72 0 230 23 23 104 46 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
24
4√2
12
20√2
8
8√2
16√2
16
13√2
20
26
23√2
10√2