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Primitive Perfect Isosceles Right Triangled Square

Title: dr 19:78AP1of4 GHM

Order: 19

Horizontal side: 78 Vertical side: 78

Elements: 2, 2√2, 4, 4√2, 8, 6√2, 7√2, 12, 9√2, 14, 18, 14√2, 21, 18√2, 30, 39, 30√2, 48, 39√2.

Code: 485 0 30 394 39 39 393 78 39 94 48 30 70 57 39 211 78 39 23 50 30 147 50 32 140 64 32 307 0 30 300 30 30 121 42 30 45 42 26 44 46 26 66 44 24 85 42 18 24 44 24 184 60 0 183 78 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)

48
39√2
39
9√2
7√2
21
2
14
14√2
30
30√2
12
4
4√2
6√2
8
2√2
18√2
18