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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216AI GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 8, 8√2, 12, 16, 24, 32, 27√2, 40, 42, 54, 40√2, 42√2, 66, 54√2, 80, 96, 81√2, 120, 108√2.

Code: 1205 0 96 1084 108 108 816 135 135 270 135 135 121 120 108 422 162 66 421 162 108 542 216 54 965 0 0 801 80 96 402 120 56 401 120 96 663 162 0 323 120 24 543 216 0 80 88 24 81 96 24 247 96 24 161 96 16

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)

120
108√2
81√2
27√2
12
42√2
42
54√2
96
80
40√2
40
66
32
54
8√2
8
24
16