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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:78AO GHM

Order: 18

Horizontal side: 78 Vertical side: 78

Elements: 3√2, 5√2, 7√2, 10, 9√2, 13, 14, 10√2, 18, 20, 23, 18√2, 28, 32, 23√2, 25√2, 46, 39√2.

Code: 465 0 32 394 39 39 256 53 53 143 53 39 205 53 33 74 46 32 36 50 36 186 32 18 135 50 23 104 63 23 103 73 23 52 78 28 325 0 0 234 23 9 283 78 0 237 50 23 96 23 9 185 32 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)

46
39√2
25√2
14
20
7√2
3√2
18√2
13
10√2
10
5√2
32
23√2
28
23
9√2
18