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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:90BA2of4 GHM

Order: 19

Horizontal side: 90 Vertical side: 90

Elements: 1√2, 2, 2√2, 3√2, 6, 6√2, 10, 9√2, 18, 20, 18√2, 20√2, 30, 26√2, 27√2, 40, 30√2, 54, 60.

Code: 605 0 30 541 54 90 272 81 63 184 72 72 183 90 72 94 81 63 266 64 46 60 64 46 16 57 39 27 58 40 26 58 38 107 60 40 403 70 0 202 90 20 30 57 39 61 60 36 305 0 0 304 30 0 203 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)

60
54
27√2
18√2
18
9√2
26√2
6√2
1√2
2
2√2
10
40
20√2
3√2
6
30
30√2
20