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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:130AQ2of2 GHM

Order: 18

Horizontal side: 130 Vertical side: 130

Elements: 2√2, 4, 4√2, 6√2, 12, 12√2, 20, 21, 21√2, 22√2, 23√2, 42, 43, 44, 43√2, 65, 87, 65√2.

Code: 875 0 43 654 65 65 653 130 65 224 87 43 423 109 23 212 130 44 211 130 65 443 130 0 437 0 43 430 43 43 201 63 43 125 63 31 124 75 31 42 67 27 64 69 25 43 67 23 22 69 25 234 86 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)

87
65√2
65
22√2
42
21√2
21
44
43
43√2
20
12
12√2
4√2
6√2
4
2√2
23√2