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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:90AI GHM

Order: 19

Horizontal side: 90 Vertical side: 90

Elements: 2, 2√2, 4, 3√2, 4√2, 6√2, 14, 12√2, 22, 24, 17√2, 22√2, 24√2, 34, 42, 44, 32√2, 34√2, 36√2.

Code: 427 0 90 360 42 90 244 66 66 243 90 66 124 78 54 443 90 22 60 6 54 44 10 50 43 14 50 32 17 51 324 46 22 170 17 51 24 12 48 23 14 48 147 0 48 347 0 34 340 34 34 224 68 0 223 90 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)

42
36√2
24√2
24
12√2
44
6√2
4√2
4
3√2
32√2
17√2
2√2
2
14
34
34√2
22√2
22