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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:78AQ GHM

Order: 18

Horizontal side: 78 Vertical side: 78

Elements: 2√2, 3, 4, 3√2, 4√2, 6, 6√2, 9, 8√2, 12, 10√2, 20, 20√2, 30, 30√2, 33√2, 48, 39√2.

Code: 485 0 30 394 39 39 336 45 45 63 45 39 32 48 42 33 48 39 125 48 30 91 48 39 305 0 0 304 30 0 100 60 30 200 50 20 201 70 20 82 78 12 66 72 6 20 72 6 47 70 4 40 74 4

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
33√2
6
3√2
3
12
9
30
30√2
10√2
20√2
20
8√2
6√2
2√2
4
4√2