Squaring.net >> IRTS >> PPIRTSS >> Order 18

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:70AU GHM

Order: 18

Horizontal side: 70 Vertical side: 70

Elements: 4, 6√2, 7√2, 12, 9√2, 14, 15, 12√2, 18, 14√2, 23, 24, 19√2, 28, 21√2, 23√2, 28√2, 42.

Code: 427 0 70 236 19 47 212 63 49 144 56 56 143 70 56 74 63 49 286 42 28 196 0 28 235 19 24 285 0 0 45 42 24 157 19 24 66 28 18 127 34 24 126 34 12 245 46 0 96 19 9 185 28 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)

42
23√2
21√2
14√2
14
7√2
28√2
19√2
23
28
4
15
6√2
12
12√2
24
9√2
18