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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:138AU1of2 GHM

Order: 19

Horizontal side: 138 Vertical side: 138

Elements: 1√2, 3√2, 4√2, 6, 5√2, 8, 10, 8√2, 10√2, 18√2, 33, 36, 33√2, 36√2, 51, 69, 51√2, 87, 69√2.

Code: 875 0 51 694 69 69 693 138 69 184 87 51 330 105 69 331 138 69 517 0 51 510 51 51 84 59 43 83 67 43 105 67 41 104 77 41 44 63 39 16 66 42 36 63 39 65 66 36 54 72 36 364 102 0 363 138 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)

87
69√2
69
18√2
33√2
33
51
51√2
8√2
8
10
10√2
4√2
1√2
3√2
6
5√2
36√2
36