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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:180AB GHM

Order: 18

Horizontal side: 180 Vertical side: 180

Elements: 2√2, 4, 4√2, 5√2, 8, 15√2, 20√2, 38, 40, 42, 50, 38√2, 70, 50√2, 72, 70√2, 110, 90√2.

Code: 1105 0 70 904 90 90 506 130 130 403 130 90 505 130 80 204 110 70 56 125 85 150 125 85 81 138 80 42 142 76 421 180 80 43 142 72 382 180 38 24 140 70 723 142 0 705 0 0 704 70 0 383 180 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)

110
90√2
50√2
40
50
20√2
5√2
15√2
8
4√2
42
4
38√2
2√2
72
70
70√2
38