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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:142BC GHM

Order: 18

Horizontal side: 142 Vertical side: 142

Elements: 1√2, 2, 2√2, 3√2, 13√2, 20, 24, 17√2, 20√2, 24√2, 34, 37, 34√2, 54, 71, 54√2, 88, 71√2.

Code: 885 0 54 714 71 71 713 142 71 174 88 54 130 105 71 371 142 71 16 91 57 27 92 58 26 92 56 247 94 58 240 118 58 30 91 57 547 0 54 540 54 54 204 74 34 203 94 34 344 108 0 343 142 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)

88
71√2
71
17√2
13√2
37
1√2
2
2√2
24
24√2
3√2
54
54√2
20√2
20
34√2
34