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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:180AD GHM

Order: 18

Horizontal side: 180 Vertical side: 180

Elements: 4√2, 6, 8, 8√2, 11√2, 12√2, 22, 16√2, 17√2, 34, 28√2, 56, 68, 56√2, 62√2, 68√2, 112, 90√2.

Code: 1125 0 68 904 90 90 626 118 118 176 101 101 345 118 84 110 101 101 221 112 90 65 112 84 82 120 76 81 120 84 42 124 80 164 136 68 280 152 84 120 124 80 685 0 0 684 68 0 560 124 56 561 180 56

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)

112
90√2
62√2
17√2
34
11√2
22
6
8√2
8
4√2
16√2
28√2
12√2
68
68√2
56√2
56