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

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:144AO GHM

Order: 18

Horizontal side: 144 Vertical side: 144

Elements: 1, 4, 4√2, 8, 8√2, 16, 15√2, 28, 29, 30, 28√2, 42, 30√2, 57, 72, 57√2, 87, 72√2.

Code: 875 0 57 724 72 72 723 144 72 154 87 57 163 102 56 82 110 64 421 144 72 83 110 56 42 114 60 43 114 56 302 144 30 577 0 57 570 57 57 291 86 57 17 86 57 287 86 56 286 86 28 303 144 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)

87
72√2
72
15√2
16
8√2
42
8
4√2
4
30√2
57
57√2
29
1
28
28√2
30