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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:108BC GHM

Order: 18

Horizontal side: 108 Vertical side: 108

Elements: 8, 8√2, 9√2, 16, 12√2, 18, 22, 24, 26, 22√2, 24√2, 36, 26√2, 31√2, 48, 36√2, 60, 72.

Code: 725 0 36 601 60 108 262 86 82 261 86 108 222 108 86 221 108 108 316 77 55 183 86 64 86 60 56 165 68 48 94 77 55 85 60 48 124 72 36 483 84 0 242 108 24 365 0 0 364 36 0 243 108 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)

72
60
26√2
26
22√2
22
31√2
18
8√2
16
9√2
8
12√2
48
24√2
36
36√2
24