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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:130AO2of2 GHM

Order: 18

Horizontal side: 130 Vertical side: 130

Elements: 4, 4√2, 6, 5√2, 8, 6√2, 8√2, 9√2, 17√2, 31, 34, 31√2, 48, 34√2, 65, 48√2, 82, 65√2.

Code: 825 0 48 654 65 65 653 130 65 174 82 48 310 99 65 311 130 65 487 0 48 480 48 48 94 57 39 46 62 44 85 66 40 84 74 40 56 57 39 45 62 40 65 62 34 64 68 34 344 96 0 343 130 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)

82
65√2
65
17√2
31√2
31
48
48√2
9√2
4√2
8
8√2
5√2
4
6
6√2
34√2
34