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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:144AL GHM

Order: 19

Horizontal side: 144 Vertical side: 144

Elements: 6, 6√2, 9√2, 16, 17√2, 18√2, 23√2, 34, 36, 38, 40, 29√2, 34√2, 36√2, 52, 54, 72, 52√2, 72√2.

Code: 725 0 72 724 72 72 526 92 92 296 63 63 525 92 40 362 36 36 541 54 72 385 54 34 94 63 63 67 92 40 60 98 40 234 121 17 403 144 0 363 36 0 182 54 18 167 54 34 340 70 34 341 104 34 172 121 17

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)

72
72√2
52√2
29√2
52
36√2
54
38
9√2
6
6√2
23√2
40
36
18√2
16
34√2
34
17√2