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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216BM GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 8, 8√2, 9√2, 16, 18, 24, 18√2, 32, 36, 40, 40√2, 78, 80, 60√2, 96, 69√2, 78√2, 120, 138.

Code: 1385 0 78 1201 120 216 805 120 136 961 216 216 405 120 96 404 160 96 86 192 128 165 200 120 323 192 96 85 192 120 247 192 120 606 156 60 184 138 78 183 156 78 367 156 96 785 0 0 784 78 0 96 147 69 690 147 69

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)

138
120
80
96
40
40√2
8√2
16
32
8
24
60√2
18√2
18
36
78
78√2
9√2
69√2