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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:76AI GHM

Order: 18

Horizontal side: 76 Vertical side: 76

Elements: 1, 1√2, 5, 5√2, 10, 10√2, 16, 18, 19, 20, 21, 18√2, 19√2, 20√2, 37, 38, 39, 38√2.

Code: 397 0 76 213 39 55 377 39 76 386 38 38 186 0 37 57 18 55 50 23 55 161 39 55 107 18 50 100 28 50 207 18 40 206 18 20 12 39 39 385 38 0 185 0 19 15 18 19 197 0 19 190 19 19

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)

39
21
37
38√2
18√2
5
5√2
16
10
10√2
20
20√2
1√2
38
18
1
19
19√2