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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:118AN GHM

Order: 18

Horizontal side: 118 Vertical side: 118

Elements: 6, 6√2, 12, 9√2, 10√2, 18, 20, 20√2, 21√2, 32, 38, 40, 30√2, 38√2, 40√2, 58, 48√2, 70.

Code: 587 0 118 480 58 118 304 88 88 216 97 97 90 97 97 181 106 88 125 106 76 65 106 70 64 112 70 386 80 38 100 10 70 701 80 70 327 80 70 207 0 60 200 20 60 407 0 40 400 40 40 385 80 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)

58
48√2
30√2
21√2
9√2
18
12
6
6√2
38√2
10√2
70
32
20
20√2
40
40√2
38