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

Primitive Perfect Isosceles Right Triangled Square

Title: dr 18:138AC1of4 GHM

Order: 18

Horizontal side: 138 Vertical side: 138

Elements: 1√2, 2, 2√2, 4, 3√2, 4√2, 7√2, 11√2, 22, 22√2, 36, 44, 47, 58, 69, 80, 58√2, 69√2.

Code: 805 0 58 694 69 69 693 138 69 114 80 58 10 91 69 471 138 69 36 87 65 27 90 68 20 92 68 47 90 66 46 90 62 445 94 22 70 87 65 587 0 58 580 58 58 361 94 58 224 116 0 223 138 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)

80
69√2
69
11√2
1√2
47
3√2
2
2√2
4
4√2
44
7√2
58
58√2
36
22√2
22