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Derivative UltraPerfect Isosceles Right Triangled Square

Title: __p 18:120JJ1of4 GHM

Order: 18

Horizontal side: 120 Vertical side: 120

Elements: 1√2, 2, 2√2, 4, 3√2, 6, 10√2, 13√2, 20, 17√2, 30, 40, 30√2, 50, 40√2, 60, 80, 60√2.

Code: 805 0 40 604 60 60 603 120 60 201 80 60 102 90 50 34 83 57 26 84 58 45 86 56 174 103 43 306 90 30 16 83 57 25 84 56 61 90 56 132 103 43 503 90 0 405 0 0 404 40 0 305 90 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

80
60√2
60
20
10√2
3√2
2√2
4
17√2
30√2
1√2
2
6
13√2
50
40
40√2
30