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

Primitive Perfect Isosceles Right Triangled Square

Title: _r 18:77AA4of4 GHM

Order: 18

Horizontal side: 77 Vertical side: 77

Elements: 2√2, 4√2, 5√2, 10, 10√2, 15, 19, 20, 15√2, 23, 27, 30, 31, 23√2, 35, 25√2, 27√2, 31√2.

Code: 315 0 46 314 31 46 303 62 47 152 77 62 151 77 77 353 77 27 56 27 42 107 32 47 106 32 37 207 42 47 232 23 23 231 23 46 195 23 27 44 27 42 22 25 25 274 50 0 273 77 0 250 25 25

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)

31
31√2
30
15√2
15
35
5√2
10
10√2
20
23√2
23
19
4√2
2√2
27√2
27
25√2