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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:222BT GHM

Order: 19

Horizontal side: 222 Vertical side: 222

Elements: 3√2, 6, 8, 6√2, 8√2, 12, 16, 12√2, 21√2, 42, 45√2, 66, 74, 82, 90, 66√2, 74√2, 148, 111√2.

Code: 1485 0 74 1114 111 111 903 222 132 216 111 111 425 132 90 454 177 87 666 156 66 161 148 90 82 156 82 81 156 90 122 168 78 121 168 90 62 174 84 61 174 90 32 177 87 823 156 0 745 0 0 744 74 0 665 156 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)

148
111√2
90
21√2
42
45√2
66√2
16
8√2
8
12√2
12
6√2
6
3√2
82
74
74√2
66