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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:90AP GHM

Order: 18

Horizontal side: 90 Vertical side: 90

Elements: 5, 7√2, 10, 12, 13, 14, 10√2, 13√2, 14√2, 20, 25, 27, 28, 35, 25√2, 35√2, 55, 45√2.

Code: 555 0 35 454 45 45 256 65 65 203 65 45 255 65 40 104 55 35 103 65 35 55 65 35 121 77 40 132 90 27 131 90 40 355 0 0 354 35 0 70 70 35 283 63 0 142 77 14 141 77 28 273 90 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)

55
45√2
25√2
20
25
10√2
10
5
12
13√2
13
35
35√2
7√2
28
14√2
14
27