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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:148AB GHM

Order: 18

Horizontal side: 148 Vertical side: 148

Elements: 1√2, 2, 4, 5√2, 10, 10√2, 20, 17√2, 20√2, 36, 38, 36√2, 38√2, 72, 74, 76, 55√2, 74√2.

Code: 765 0 72 744 74 74 743 148 74 21 76 74 12 77 73 364 112 38 363 148 38 50 77 73 727 0 72 176 55 55 47 72 72 107 72 68 100 82 68 207 72 58 200 92 58 550 55 55 384 110 0 383 148 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)

76
74√2
74
2
1√2
36√2
36
5√2
72
17√2
4
10
10√2
20
20√2
55√2
38√2
38