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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:85AC GHM

Order: 18

Horizontal side: 85 Vertical side: 85

Elements: 2, 2√2, 4, 9, 9√2, 18, 20, 22, 27, 20√2, 21√2, 22√2, 23√2, 36, 40, 42, 43, 45.

Code: 457 0 85 363 45 49 407 45 85 423 85 43 90 9 49 91 18 49 277 18 49 43 45 45 230 41 45 24 43 43 214 64 22 433 85 0 202 20 20 181 18 40 21 20 22 225 20 0 224 42 0 203 20 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)

45
36
40
42
9√2
9
27
4
23√2
2√2
21√2
43
20√2
18
2
22
22√2
20