Squaring.net >> IRTS >> PPIRTSS >> Order 19

Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:84AN5of16 GHM

Order: 19

Horizontal side: 84 Vertical side: 84

Elements: 2√2, 4, 4√2, 6, 8, 6√2, 8√2, 9√2, 14, 18, 14√2, 18√2, 28, 30, 36, 27√2, 42, 48, 42√2.

Code: 485 0 36 424 42 42 423 84 42 64 48 36 63 54 36 147 54 42 140 68 42 84 76 34 83 84 34 182 18 18 181 18 36 92 27 27 361 54 36 44 80 30 43 84 30 24 82 28 303 84 0 287 54 28 270 27 27

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)

48
42√2
42
6√2
6
14
14√2
8√2
8
18√2
18
9√2
36
4√2
4
2√2
30
28
27√2