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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:62AO4of4 GHM

Order: 19

Horizontal side: 62 Vertical side: 62

Elements: 1, 1√2, 2, 2√2, 4, 4√2, 7, 9, 7√2, 9√2, 11√2, 18, 13√2, 20, 22, 20√2, 31, 42, 31√2.

Code: 425 0 20 314 31 31 313 62 31 114 42 20 183 53 13 92 62 22 91 62 31 223 62 0 207 0 20 200 20 20 74 27 13 73 34 13 45 34 16 44 38 16 25 34 14 24 36 14 15 34 13 14 35 13 134 40 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)

42
31√2
31
11√2
18
9√2
9
22
20
20√2
7√2
7
4
4√2
2
2√2
1
1√2
13√2