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

Primitive Perfect Isosceles Right Triangled Square

Title: dr 19:66AM1of4 GHM

Order: 19

Horizontal side: 66 Vertical side: 66

Elements: 2, 2√2, 4, 4√2, 6, 8, 9, 7√2, 12, 9√2, 14, 12√2, 14√2, 21, 24, 21√2, 33, 45, 33√2.

Code: 455 0 21 334 33 33 333 66 33 124 45 21 123 57 21 92 66 24 91 66 33 243 66 0 217 0 21 210 21 21 144 35 7 143 49 7 27 49 21 20 51 21 61 57 21 47 49 19 40 53 19 87 49 15 74 42 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)

45
33√2
33
12√2
12
9√2
9
24
21
21√2
14√2
14
2
2√2
6
4
4√2
8
7√2