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

Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:84AF4of4 GHM

Order: 19

Horizontal side: 84 Vertical side: 84

Elements: 2√2, 4, 4√2, 8, 9, 8√2, 14, 18, 14√2, 21, 15√2, 18√2, 28, 21√2, 30, 36, 42, 33√2, 42√2.

Code: 425 0 42 424 42 42 336 51 51 93 51 42 152 66 36 307 0 42 283 30 14 212 51 21 211 51 42 363 66 0 182 84 18 183 84 0 20 2 14 144 16 0 143 30 0 47 0 12 40 4 12 87 0 8 80 8 8

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)

42
42√2
33√2
9
15√2
30
28
21√2
21
36
18√2
18
2√2
14√2
14
4
4√2
8
8√2