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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:78AR1of4 GHM

Order: 18

Horizontal side: 78 Vertical side: 78

Elements: 3, 3√2, 6, 5√2, 6√2, 9, 10, 9√2, 10√2, 19, 14√2, 20, 20√2, 29, 39, 29√2, 49, 39√2.

Code: 495 0 29 394 39 39 393 78 39 104 49 29 103 59 29 52 64 34 191 78 39 140 64 34 297 0 29 290 29 29 64 35 23 63 41 23 95 41 20 94 50 20 34 38 20 33 41 20 204 58 0 203 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)

49
39√2
39
10√2
10
5√2
19
14√2
29
29√2
6√2
6
9
9√2
3√2
3
20√2
20