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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:174AM GHM

Order: 19

Horizontal side: 174 Vertical side: 174

Elements: 3√2, 6, 6√2, 12, 18, 19√2, 21√2, 30, 38, 30√2, 34√2, 38√2, 68, 72, 53√2, 76, 64√2, 68√2, 72√2.

Code: 722 72 102 534 53 121 346 72 140 687 106 174 686 106 106 196 53 121 642 136 76 723 72 30 763 136 0 382 174 38 383 174 0 307 0 30 300 30 30 214 51 9 183 72 12 36 51 9 67 54 12 66 54 6 127 60 12

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√2
53√2
34√2
68
68√2
19√2
64√2
72
76
38√2
38
30
30√2
21√2
18
3√2
6
6√2
12