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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:90AI GHM

Order: 18

Horizontal side: 90 Vertical side: 90

Elements: 2√2, 4, 5, 4√2, 5√2, 6√2, 10, 12, 10√2, 12√2, 19, 24, 33, 39, 45, 51, 39√2, 45√2.

Code: 515 0 39 454 45 45 453 90 45 64 51 39 20 57 45 331 90 45 40 55 43 41 59 43 195 59 24 397 0 39 390 39 39 104 49 29 103 59 29 54 54 24 53 59 24 241 78 24 122 90 12 123 90 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)

51
45√2
45
6√2
2√2
33
4√2
4
19
39
39√2
10√2
10
5√2
5
24
12√2
12