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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:90AQ1of4 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 90 120 46 68 441 90 68 201 54 56 42 58 52 41 58 56 22 60 54 60 60 54 127 54 48 483 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√2
44
20
4√2
4
2√2
6√2
12
48
24√2
18√2
27√2
24
18
9√2