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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:91AB GHM

Order: 18

Horizontal side: 91 Vertical side: 91

Elements: 7, 8, 7√2, 8√2, 12, 14, 10√2, 16, 12√2, 14√2, 20, 16√2, 28, 20√2, 30√2, 51, 53, 71.

Code: 717 0 91 106 61 81 207 71 91 206 71 71 533 61 28 302 91 51 513 91 0 86 0 20 165 8 12 164 24 12 283 40 0 142 54 14 141 54 28 72 61 21 71 61 28 85 0 12 125 0 0 124 12 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)

71
10√2
20
20√2
53
30√2
51
8√2
16
16√2
28
14√2
14
7√2
7
8
12
12√2