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

Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:220BZ3of4 GHM

Order: 19

Horizontal side: 220 Vertical side: 220

Elements: 4√2, 8, 7√2, 8√2, 12, 14, 12√2, 14√2, 24, 18√2, 28, 64, 78, 64√2, 92, 71√2, 78√2, 142, 110√2.

Code: 1425 0 78 1104 110 110 923 220 128 186 110 110 245 128 104 281 156 128 647 156 128 646 156 64 125 128 92 124 140 92 40 152 104 80 148 100 81 156 100 144 142 78 143 156 78 785 0 0 784 78 0 76 149 71 710 149 71

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)

142
110√2
92
18√2
24
28
64
64√2
12
12√2
4√2
8√2
8
14√2
14
78
78√2
7√2
71√2