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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:126AE GHM

Order: 18

Horizontal side: 126 Vertical side: 126

Elements: 1√2, 7√2, 12, 12√2, 20, 18√2, 19√2, 36, 26√2, 38, 27√2, 28√2, 44, 36√2, 54, 44√2, 72, 54√2.

Code: 727 0 126 446 28 82 542 126 72 541 126 126 286 0 54 445 28 38 366 90 36 272 27 27 125 28 26 124 40 26 196 33 19 385 52 0 201 72 38 186 72 18 365 90 0 10 27 27 260 26 26 74 33 19

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
44√2
54√2
54
28√2
44
36√2
27√2
12
12√2
19√2
38
20
18√2
36
1√2
26√2
7√2