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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:230AA GHM

Order: 19

Horizontal side: 230 Vertical side: 230

Elements: 4, 10√2, 20, 20√2, 40, 37√2, 40√2, 41√2, 72, 74, 76, 78, 80, 82, 72√2, 74√2, 76√2, 78√2, 80√2.

Code: 827 0 230 720 82 230 721 154 230 767 154 230 766 154 154 106 0 148 207 10 158 206 10 138 407 30 158 406 30 118 807 70 158 800 150 158 41 154 158 742 74 74 414 111 37 780 152 78 781 230 78 743 74 0 372 111 37

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)

82
72√2
72
76
76√2
10√2
20
20√2
40
40√2
80
80√2
4
74√2
41√2
78√2
78
74
37√2