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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:72AK GHM

Order: 18

Horizontal side: 72 Vertical side: 72

Elements: 3√2, 4√2, 8, 8√2, 10√2, 15, 16, 13√2, 20, 21, 15√2, 16√2, 26, 20√2, 21√2, 23√2, 36, 36√2.

Code: 365 0 36 364 36 36 236 49 49 130 49 49 215 0 15 214 21 15 200 42 36 201 62 36 102 72 26 263 72 0 46 18 12 87 22 16 86 22 8 165 30 0 164 46 0 157 0 15 150 15 15 34 18 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)

36
36√2
23√2
13√2
21
21√2
20√2
20
10√2
26
4√2
8
8√2
16
16√2
15
15√2
3√2