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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:72BP GHM

Order: 18

Horizontal side: 72 Vertical side: 72

Elements: 1√2, 2, 5√2, 8, 9, 10, 11, 10√2, 11√2, 18, 13√2, 22, 24, 26, 23√2, 24√2, 48, 36√2.

Code: 485 0 24 364 36 36 236 49 49 136 36 36 185 49 31 87 49 31 93 57 22 102 67 21 101 67 31 52 72 26 263 72 0 245 0 0 244 24 0 23 48 22 12 49 23 223 46 0 112 57 11 111 57 22

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)

48
36√2
23√2
13√2
18
8
9
10√2
10
5√2
26
24
24√2
2
1√2
22
11√2
11