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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:140AC GHM

Order: 18

Horizontal side: 140 Vertical side: 140

Elements: 5√2, 10, 8√2, 16, 22, 16√2, 28, 22√2, 32, 25√2, 38, 30√2, 50, 40√2, 60, 70, 80, 70√2.

Code: 807 0 140 503 80 90 227 80 140 220 102 140 381 140 140 287 80 118 86 100 110 167 108 118 160 124 118 400 100 110 321 140 102 300 30 90 254 55 65 56 55 65 107 60 70 700 70 70 701 140 70 607 0 60

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)

80
50
22
22√2
38
28
8√2
16
16√2
40√2
32
30√2
25√2
5√2
10
70√2
70
60