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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:128AH GHM

Order: 18

Horizontal side: 128 Vertical side: 128

Elements: 4, 4√2, 7, 8, 8√2, 10√2, 15, 11√2, 20, 22, 21√2, 42, 44, 42√2, 43√2, 44√2, 84, 64√2.

Code: 845 0 44 644 64 64 436 85 85 116 74 74 225 85 63 100 74 74 201 84 64 82 92 56 71 92 63 157 92 63 210 107 63 83 92 48 45 84 44 44 88 44 445 0 0 444 44 0 420 86 42 421 128 42

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)

84
64√2
43√2
11√2
22
10√2
20
8√2
7
15
21√2
8
4
4√2
44
44√2
42√2
42