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Primitive Perfect Isosceles Right Triangled Square

Title: _r 18:72AN1of4 GHM

Order: 18

Horizontal side: 72 Vertical side: 72

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

Code: 365 0 36 364 36 36 276 45 45 90 45 45 107 0 36 106 0 26 207 10 36 200 30 36 241 54 36 182 72 18 265 0 0 183 72 0 164 26 0 163 42 0 82 50 8 81 50 16 42 54 12 123 54 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
36√2
27√2
9√2
10
10√2
20
20√2
24
18√2
26
18
16√2
16
8√2
8
4√2
12