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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216CN GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 1√2, 2, 2√2, 4, 6, 7√2, 10√2, 20, 17√2, 34, 37, 37√2, 71, 74, 71√2, 74√2, 108, 142, 108√2.

Code: 1425 0 74 1084 108 108 1083 216 108 341 142 108 205 142 88 374 179 71 373 216 71 72 149 81 104 152 78 170 162 88 10 149 81 63 148 74 27 148 80 20 150 80 47 148 78 745 0 0 744 74 0 710 145 71 711 216 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
108√2
108
34
20
37√2
37
7√2
10√2
17√2
1√2
6
2
2√2
4
74
74√2
71√2
71