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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:70AP GHM

Order: 18

Horizontal side: 70 Vertical side: 70

Elements: 5, 4√2, 8, 10, 11, 8√2, 14, 15, 11√2, 16, 19, 15√2, 25, 20√2, 30, 35, 40, 35√2.

Code: 407 0 70 253 40 45 117 40 70 110 51 70 191 70 70 147 40 59 46 50 55 87 54 59 80 62 59 200 50 55 161 70 51 150 15 45 151 30 45 107 30 45 57 30 35 350 35 35 351 70 35 307 0 30

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
25
11
11√2
19
14
4√2
8
8√2
20√2
16
15√2
15
10
5
35√2
35
30