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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:30AD GHM

Order: 18

Horizontal side: 30 Vertical side: 30

Elements: 1, 1√2, 2, 2√2, 4, 5, 4√2, 6, 7, 8, 7√2, 10, 12, 13, 14, 10√2, 16, 20.

Code: 205 0 10 161 16 30 125 16 18 141 30 30 47 16 18 46 16 14 87 20 18 53 28 13 22 30 16 23 30 14 15 28 13 14 29 13 76 23 7 133 23 0 67 23 13 105 0 0 104 10 0 75 23 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)

20
16
12
14
4
4√2
8
5
2√2
2
1
1√2
7√2
13
6
10
10√2
7