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

Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:216CW1of4 GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 2, 2√2, 4, 4√2, 6, 6√2, 7√2, 14, 20, 27√2, 54, 74, 54√2, 81, 88, 74√2, 81√2, 135, 142.

Code: 1425 0 74 1351 135 216 817 135 216 816 135 135 272 162 108 203 162 88 542 216 54 76 135 81 27 142 88 26 142 86 47 144 88 46 144 84 147 148 88 883 162 0 62 148 80 63 148 74 745 0 0 744 74 0 543 216 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)

142
135
81
81√2
27√2
20
54√2
7√2
2
2√2
4
4√2
14
88
6√2
6
74
74√2
54