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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:200AP GHM

Order: 18

Horizontal side: 200 Vertical side: 200

Elements: 3√2, 6, 6√2, 12, 18, 28, 21√2, 28√2, 42, 44, 56, 42√2, 44√2, 72, 100, 72√2, 128, 100√2.

Code: 1285 0 72 1004 100 100 1003 200 100 284 128 72 283 156 72 442 200 56 441 200 100 727 0 72 720 72 72 424 114 30 423 156 30 563 200 0 214 135 9 183 156 12 36 135 9 67 138 12 66 138 6 127 144 12

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)

128
100√2
100
28√2
28
44√2
44
72
72√2
42√2
42
56
21√2
18
3√2
6
6√2
12