Squaring.net >> IRTS >> PPIRTSS >> Order 19

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:70AX3of4 GHM

Order: 19

Horizontal side: 70 Vertical side: 70

Elements: 1√2, 3√2, 6, 6√2, 10, 8√2, 12, 9√2, 10√2, 12√2, 13√2, 14√2, 20, 28, 20√2, 22√2, 28√2, 40, 30√2.

Code: 407 0 70 286 12 42 202 60 50 201 60 70 102 70 60 101 70 70 306 40 30 126 0 30 285 12 14 92 9 21 82 48 22 220 48 22 30 9 21 60 6 18 61 12 18 12 13 13 144 26 0 130 13 13 127 0 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)

40
28√2
20√2
20
10√2
10
30√2
12√2
28
9√2
8√2
22√2
3√2
6√2
6
1√2
14√2
13√2
12