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

Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:440AF GHM

Order: 19

Horizontal side: 440 Vertical side: 440

Elements: 4, 4√2, 8, 6√2, 12, 12√2, 28, 32√2, 46, 64, 55√2, 110, 110√2, 156, 174, 156√2, 165√2, 284, 220√2.

Code: 2845 0 156 2204 220 220 1656 275 275 550 275 275 641 284 220 322 316 188 461 330 220 1102 440 110 46 312 184 85 316 180 283 312 156 45 312 180 122 324 168 121 324 180 62 330 174 1743 330 0 1565 0 0 1564 156 0 1103 440 0

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)

284
220√2
165√2
55√2
64
32√2
46
110√2
4√2
8
28
4
12√2
12
6√2
174
156
156√2
110