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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:120AH GHM

Order: 18

Horizontal side: 120 Vertical side: 120

Elements: 4, 4√2, 12, 9√2, 12√2, 18, 24, 17√2, 18√2, 26, 24√2, 34, 34√2, 52, 56, 60, 64, 60√2.

Code: 647 0 120 523 64 68 567 64 120 606 60 60 126 0 56 245 12 44 244 36 44 346 26 34 42 64 64 41 64 68 605 60 0 125 0 44 185 0 26 184 18 26 176 9 17 345 26 0 265 0 0 94 9 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)

64
52
56
60√2
12√2
24
24√2
34√2
4√2
4
60
12
18
18√2
17√2
34
26
9√2