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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:38AA GHM

Order: 18

Horizontal side: 38 Vertical side: 38

Elements: 1√2, 2, 2√2, 6, 5√2, 8, 6√2, 7√2, 10, 8√2, 12, 14, 10√2, 16, 12√2, 14√2, 20, 15√2.

Code: 152 15 23 124 12 26 76 17 31 147 24 38 146 24 24 50 17 31 24 14 24 23 16 24 67 16 26 60 22 26 14 15 23 163 16 8 127 16 20 203 28 0 102 38 10 103 38 0 85 0 0 84 8 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)

15√2
12√2
7√2
14
14√2
5√2
2√2
2
6
6√2
1√2
16
12
20
10√2
10
8
8√2