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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:55AC2of2 GHM

Order: 18

Horizontal side: 55 Vertical side: 55

Elements: 4, 3√2, 4√2, 6, 8, 6√2, 8√2, 12, 9√2, 13, 17, 13√2, 21, 17√2, 25, 21√2, 30, 34.

Code: 345 0 21 301 30 55 125 30 43 251 55 55 92 39 34 64 36 37 63 42 37 132 55 30 34 39 34 86 34 29 133 55 17 46 30 25 85 34 21 215 0 0 214 21 0 43 42 17 170 38 17 171 55 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)

34
30
12
25
9√2
6√2
6
13√2
3√2
8√2
13
4√2
8
21
21√2
4
17√2
17