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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:90AQ3of4 GHM

Order: 19

Horizontal side: 90 Vertical side: 90

Elements: 2√2, 4, 4√2, 6√2, 12, 9√2, 12√2, 18, 20, 22, 24, 18√2, 22√2, 24√2, 27√2, 44, 48, 34√2, 54.

Code: 545 0 36 344 34 56 220 68 90 221 90 90 123 46 56 205 46 48 441 90 68 64 40 50 46 42 52 26 40 50 45 42 48 124 54 36 483 66 0 242 90 24 182 18 18 274 27 9 243 90 0 183 18 0 92 27 9

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)

54
34√2
22√2
22
12
20
44
6√2
4√2
2√2
4
12√2
48
24√2
18√2
27√2
24
18
9√2