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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:139AA GHM

Order: 18

Horizontal side: 139 Vertical side: 139

Elements: 8√2, 16, 22, 16√2, 24, 28, 22√2, 24√2, 25√2, 39, 28√2, 48, 50, 36√2, 39√2, 50√2, 78, 89.

Code: 897 0 139 280 89 139 281 117 139 222 139 117 221 139 139 783 139 39 366 25 75 247 61 111 240 85 111 164 101 95 163 117 95 84 109 87 487 61 87 250 25 75 507 0 50 500 50 50 394 100 0 393 139 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)

89
28√2
28
22√2
22
78
36√2
24
24√2
16√2
16
8√2
48
25√2
50
50√2
39√2
39