Squaring.net >> IRTS >> PPIRTSS >> Order 18

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:142AV GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 2, 2√2, 6√2, 12, 12√2, 15√2, 17√2, 18√2, 26, 30, 24√2, 41, 30√2, 56, 71, 56√2, 86, 71√2.

Code: 865 0 56 714 71 71 713 142 71 154 86 56 170 101 71 411 142 71 567 0 56 560 56 56 261 82 56 25 82 54 24 84 54 122 94 42 184 100 36 240 118 54 123 94 30 62 100 36 304 112 0 303 142 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)

86
71√2
71
15√2
17√2
41
56
56√2
26
2
2√2
12√2
18√2
24√2
12
6√2
30√2
30