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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:216AL GHM

Order: 18

Horizontal side: 216 Vertical side: 216

Elements: 6√2, 10, 8√2, 10√2, 16, 14√2, 20, 16√2, 28, 21√2, 58, 72, 58√2, 86, 72√2, 79√2, 144, 108√2.

Code: 1445 0 72 1084 108 108 796 137 137 210 137 137 86 108 108 165 116 100 164 132 100 100 148 116 101 158 116 582 216 58 60 138 106 201 158 106 281 144 100 142 158 86 863 158 0 725 0 0 724 72 0 583 216 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)

144
108√2
79√2
21√2
8√2
16
16√2
10√2
10
58√2
6√2
20
28
14√2
86
72
72√2
58