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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:108AT3of4 GHM

Order: 18

Horizontal side: 108 Vertical side: 108

Elements: 3√2, 6, 6√2, 7√2, 12, 9√2, 14, 12√2, 14√2, 26, 19√2, 28, 28√2, 40, 54, 40√2, 68, 54√2.

Code: 685 0 40 544 54 54 543 108 54 144 68 40 143 82 40 72 89 47 261 108 54 190 89 47 407 0 40 400 40 40 124 52 28 36 61 37 67 64 40 66 64 34 127 70 40 90 61 37 284 80 0 283 108 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)

68
54√2
54
14√2
14
7√2
26
19√2
40
40√2
12√2
3√2
6
6√2
12
9√2
28√2
28