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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:40AO1of4 GHM

Order: 18

Horizontal side: 40 Vertical side: 40

Elements: 1√2, 2, 2√2, 4, 3√2, 4√2, 6, 5√2, 8, 6√2, 8√2, 12, 9√2, 14, 14√2, 20, 26, 20√2.

Code: 265 0 14 204 20 20 203 40 20 64 26 14 63 32 14 82 40 12 81 40 20 147 0 14 140 14 14 94 23 5 36 29 11 123 40 0 10 29 11 56 23 5 27 28 10 20 30 10 42 32 4 41 32 8

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)

26
20√2
20
6√2
6
8√2
8
14
14√2
9√2
3√2
12
1√2
5√2
2
2√2
4√2
4