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Primitive Perfect Isosceles Right Triangled Square

Title: _r 19:90BA3of4 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 46 103 64 36 62 70 40 403 70 0 202 90 20 61 60 36 32 63 33 24 62 34 23 64 34 14 63 33 305 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
10
6√2
40
20√2
6
3√2
2√2
2
1√2
30
30√2
20