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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:121AC GHM

Order: 18

Horizontal side: 121 Vertical side: 121

Elements: 11, 12, 15, 11√2, 12√2, 18, 15√2, 22, 24, 18√2, 22√2, 24√2, 44, 48, 51, 55, 55√2, 88.

Code: 887 0 121 220 88 121 221 110 121 112 121 110 111 121 121 556 66 55 483 66 51 447 66 99 555 66 0 186 0 33 245 18 27 244 42 27 513 66 0 185 0 15 125 18 15 124 30 15 155 0 0 154 15 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)

88
22√2
22
11√2
11
55√2
48
44
55
18√2
24
24√2
51
18
12
12√2
15
15√2