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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:216BI GHM

Order: 19

Horizontal side: 216 Vertical side: 216

Elements: 2, 2√2, 4, 6, 8, 10, 10√2, 20, 15√2, 24, 30, 54, 54√2, 78, 69√2, 108, 78√2, 138, 108√2.

Code: 1385 0 78 1084 108 108 1083 216 108 301 138 108 205 138 88 241 162 108 547 162 108 546 162 54 105 138 78 104 148 78 26 156 86 45 158 84 83 156 78 25 156 84 67 156 84 156 147 69 785 0 0 784 78 0 690 147 69

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)

138
108√2
108
30
20
24
54
54√2
10
10√2
2√2
4
8
2
6
15√2
78
78√2
69√2