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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:212AE GHM

Order: 18

Horizontal side: 212 Vertical side: 212

Elements: 6, 6√2, 16, 22, 16√2, 32, 34, 38, 34√2, 35√2, 36√2, 68, 70, 74, 71√2, 74√2, 138, 106√2.

Code: 1385 0 74 1064 106 106 716 141 141 350 141 141 321 138 106 162 154 90 381 176 106 362 212 70 163 154 74 225 154 68 745 0 0 744 74 0 60 148 74 61 154 74 703 212 0 683 142 0 342 176 34 341 176 68

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)

138
106√2
71√2
35√2
32
16√2
38
36√2
16
22
74
74√2
6√2
6
70
68
34√2
34