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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:69AC GHM

Order: 18

Horizontal side: 69 Vertical side: 69

Elements: 2√2, 4, 3√2, 4√2, 6, 7, 7√2, 14, 14√2, 21, 16√2, 18√2, 27, 28, 21√2, 24√2, 35, 48.

Code: 487 0 69 186 30 51 212 69 48 211 69 69 160 30 51 246 45 24 146 0 21 287 14 35 353 42 0 42 46 31 41 46 35 22 48 33 63 48 27 275 42 0 34 45 24 145 0 7 75 0 0 74 7 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
18√2
21√2
21
16√2
24√2
14√2
28
35
4√2
4
2√2
6
27
3√2
14
7
7√2