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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:139AC GHM

Order: 18

Horizontal side: 139 Vertical side: 139

Elements: 7, 12, 12√2, 20, 24, 18√2, 20√2, 24√2, 36, 27√2, 40, 48, 36√2, 54, 60, 61, 67, 103.

Code: 1037 0 139 240 103 139 241 127 139 122 139 127 121 139 139 603 139 67 613 79 54 487 79 115 207 79 67 206 79 47 407 99 67 673 139 0 180 18 54 541 72 54 272 99 27 71 79 54 367 0 36 360 36 36

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)

103
24√2
24
12√2
12
60
61
48
20
20√2
40
67
18√2
54
27√2
7
36
36√2