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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:106AP2of4 GHM

Order: 18

Horizontal side: 106 Vertical side: 106

Elements: 1√2, 2, 2√2, 4, 4√2, 8, 7√2, 8√2, 15√2, 23, 30, 23√2, 38, 30√2, 53, 38√2, 68, 53√2.

Code: 685 0 38 534 53 53 533 106 53 154 68 38 230 83 53 231 106 53 387 0 38 380 38 38 81 46 38 42 50 34 41 50 38 22 52 36 21 52 38 12 53 37 84 60 30 70 53 37 304 76 0 303 106 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)

68
53√2
53
15√2
23√2
23
38
38√2
8
4√2
4
2√2
2
1√2
8√2
7√2
30√2
30